Need Advice on great Crossbow Sniper

[Haplo01]

Build Concept:
1.Mainly use Great Crossbow but also can use Repeating crossbow(Smiting,Disruption,etc) or Bow(Manyshot)
2.Must disable trap
3.TWF when required

13 lvl Rogue provide:
Sneak Attack +7d6, 2 Special Abilities

6 lvl Ranger provide:
TWF, Rapid Shot, 2 Favored Enemies, diehard


Rogue Mechanic II provide:
1. Weapon Proficiency: Repeating Light Crossbows and Repeating Heavy Crossbows
2. Add their Intelligence bonus to damage with crossbows of all types

Ranger Deepwood Sniper I provide:
Sniper Shot : Ranged attack with a +4 bonus to hit, +1 to critical threat range, and +1 to critical threat multiplier
which fit Great crossbow(2d8 18-20/x2 or green steel 3d8 18-20/x2)

Any improvement for this build?

Character Plan by DDO Character Planner Version 3.5.1
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Great xbow Sniper
Level 20 True Neutral Drow Female
(1 Fighter \ 13 Rogue \ 6 Ranger) 
Hit Points: 176
Spell Points: 45 
BAB: 16\16\21\26\26
Fortitude: 12
Reflex: 21
Will: 5

                  Starting          Feat/Enhancement
Abilities        Base Stats          Modified Stats
(28 Point)       (Level 1)             (Level 20)
Strength              8                     8
Dexterity            18                    27
Constitution         12                    12
Intelligence         18                    18
Wisdom                8                     8
Charisma             12                    12

                  Starting          Feat/Enhancement
                 Base Skills         Modified Skills
Skills           (Level 1)            (Level 20)
Balance               8                    23
Bluff                 5                    16
Concentration         1                     1
Diplomacy             1                     1
Disable Device        8                    34
Haggle                5                    16
Heal                 -1                    -1
Hide                  8                    34
Intimidate            1                     1
Jump                  3                    20
Listen               -1                     1
Move Silently         8                    34
Open Lock             8                    38
Perform               n/a                   n/a
Repair                4                     8
Search                8                    37
Spot                  3                    23
Swim                 -1                    -1
Tumble                8                    26
Use Magic Device      5                    24

Level 1 (Rogue)
Feat: (Selected) Point Blank Shot
Feat: (Automatic) Attack
Feat: (Automatic) Drow Spell Resistance
Feat: (Automatic) Elven Keen Senses
Feat: (Automatic) Enchantment Save Bonus
Feat: (Automatic) Exotic Weapon Proficiency: Shuriken
Feat: (Automatic) Heroic Durability
Feat: (Automatic) Immunity to Sleep
Feat: (Automatic) Light Armor Proficiency
Feat: (Automatic) Martial Weapon Proficiency: Rapier
Feat: (Automatic) Martial Weapon Proficiency: Shortsword
Feat: (Automatic) Martial Weapon Proficiency: Shortbow
Feat: (Automatic) Simple Weapon Proficiency
Feat: (Automatic) Sneak
Feat: (Automatic) Sneak Attack
Feat: (Automatic) Spell Save Bonus
Feat: (Automatic) Trapfinding
Enhancement: Rogue Disable Device I


Level 2 (Rogue)
Feat: (Automatic) Defensive Fighting
Feat: (Automatic) Evasion
Feat: (Automatic) Sunder
Feat: (Automatic) Trip


Level 3 (Rogue)
Feat: (Selected) Precise Shot
Feat: (Automatic) Trap Sense


Level 4 (Rogue)
Feat: (Automatic) Trapmaking
Feat: (Automatic) Uncanny Dodge


Level 5 (Rogue)


Level 6 (Rogue)
Feat: (Selected) Exotic Weapon Proficiency: Great Crossbow


Level 7 (Rogue)


Level 8 (Rogue)
Feat: (Automatic) Improved Uncanny Dodge


Level 9 (Rogue)
Feat: (Selected) Weapon Finesse


Level 10 (Rogue)
Feat: (Rogue Bonus) Improved Evasion


Level 11 (Rogue)


Level 12 (Rogue)
Feat: (Selected) Improved Critical: Ranged Weapons


Level 13 (Ranger)
Feat: (Favored Enemy) Favored Enemy: Evil Outsider
Feat: (Automatic) Bow Strength
Feat: (Automatic) Martial Weapon Proficiency (ALL)
Feat: (Automatic) Shield Proficiency (General)
Feat: (Automatic) Wild Empathy


Level 14 (Ranger)
Feat: (Automatic) Rapid Shot
Feat: (Automatic) Two Weapon Fighting


Level 15 (Ranger)
Feat: (Selected) Improved Precise Shot
Feat: (Automatic) Diehard


Level 16 (Ranger)


Level 17 (Ranger)
Feat: (Favored Enemy) Favored Enemy: Chaotic Outsider


Level 18 (Ranger)
Feat: (Selected) Weapon Focus: Ranged Weapons
Feat: (Automatic) Improved Two Weapon Fighting
Feat: (Automatic) Manyshot


Level 19 (Fighter)
Feat: (Fighter Bonus) Rapid Reload
Feat: (Automatic) Heavy Armor Proficiency
Feat: (Automatic) Medium Armor Proficiency
Feat: (Automatic) Tower Shield Proficiency


Level 20 (Rogue)
Feat: (Rogue Bonus) Defensive Roll
Enhancement: Rogue Extra Action Boost I
Enhancement: Rogue Haste Boost I
Enhancement: Rogue Skill Boost I
Enhancement: Rogue Skill Boost II
Enhancement: Rogue Skill Boost III
Enhancement: Rogue Skill Boost IV
Enhancement: Ranger Sprint Boost I
Enhancement: Elven Dexterity I
Enhancement: Elven Dexterity II
Enhancement: Elven Enchantment Resistance I
Enhancement: Elven Perception I
Enhancement: Elven Perception II
Enhancement: Rogue Fire Trap Lore I
Enhancement: Fighter Critical Accuracy I
Enhancement: Rogue Item Defense I
Enhancement: Rogue Subtle Backstabbing I
Enhancement: Ranger Deepwood Sniper I
Enhancement: Rogue Faster Sneaking I
Enhancement: Rogue Mechanic I
Enhancement: Rogue Mechanic II
Enhancement: Rogue Sneak Attack Accuracy I
Enhancement: Rogue Sneak Attack Training I
Enhancement: Rogue Sneak Attack Training II
Enhancement: Rogue Sneak Attack Training III
Enhancement: Rogue Disable Device II
Enhancement: Rogue Disable Device III
Enhancement: Ranger Hide I
Enhancement: Ranger Hide II
Enhancement: Ranger Move Silently I
Enhancement: Ranger Move Silently II
Enhancement: Rogue Open Lock I
Enhancement: Rogue Open Lock II
Enhancement: Rogue Open Lock III
Enhancement: Rogue Search I
Enhancement: Rogue Search II
Enhancement: Ranger Spot I
Enhancement: Ranger Spot II
Enhancement: Ranger Energy of the Wild I
Enhancement: Rogue Dexterity I
Enhancement: Rogue Dexterity II
Enhancement: Rogue Improved Trap Sense I
Enhancement: Rogue Improved Trap Sense II

[Thorzian]

dont

[GhoulsTouch]

I would rely on enhancements to boost dex and put level ups in intelligence then trade off Great Crossbow for at least one toughness feat dropping dex and charisma to put intelligence to at least 19 starting. Damage takes priority over to hit I think in the long run. Besides it just makes you more competent as a rogue.

9 17 12 19 8 10 stats, dex would be 22 and intelligence 24 in the end.

You need that toughness feat, bad. I would even consider dropping the Improved precise shot for another toughness for two toughness feats. It would net you 86 hp with enhancements. So 262 hp.

[Haplo01]

I would rely on enhancements to boost dex and put level ups in intelligence then trade off Great Crossbow for at least one toughness feat dropping dex and charisma to put intelligence to at least 19 starting. Damage takes priority over to hit I think in the long run. Besides it just makes you more competent as a rogue.

9 17 12 19 8 10 stats, dex would be 22 and intelligence 24 in the end.

You need that toughness feat, bad. I would even consider dropping the Improved precise shot for another toughness for two toughness feats. It would net you 86 hp with enhancements. So 262 hp.

You are right. Hp of this build is too low.
I will change the feat and add toughness.

[Krag]

dont

this

[Arcticwarrior]

dont

and

this

^point

[Symar-FangofLloth]

Repeater rogue *can* work, but don't do Great Crossbow.
And you'll likely feel gimpy regardless.