Artificer Max DPS Build (Please critique)

[Belief]

Character Plan by DDO Character Planner Version 03.16.01
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EndofLine 
Level 20 True Neutral Warforged Male
(20 Artificer) 
Hit Points: 312
Spell Points: 1157 
BAB: 15\15\20\25\25
Fortitude: 11
Reflex: 11
Will: 11

                  Starting            Ending          Feat/Enhancement
Abilities        Base Stats         Base Stats         Modified Stats
(34 Point)       (Level 1)          (Level 20)           (Level 20)
Strength             10                 12                   12
Dexterity            16                 21                   21
Constitution         16                 18                   20
Intelligence         18                 24                   27
Wisdom                6                  8                    8
Charisma              6                  8                    8

Tomes Used
+1 Tome of Strength used at level 4
+1 Tome of Dexterity used at level 4
+1 Tome of Constitution used at level 4
+1 Tome of Intelligence used at level 4
+1 Tome of Wisdom used at level 4
+1 Tome of Charisma used at level 4
+2 Tome of Strength used at level 8
+2 Tome of Dexterity used at level 8
+2 Tome of Constitution used at level 8
+2 Tome of Intelligence used at level 8
+2 Tome of Wisdom used at level 8
+2 Tome of Charisma used at level 8
+3 Tome of Dexterity used at level 11
+3 Tome of Intelligence used at level 11

                  Starting            Ending          Feat/Enhancement
                 Base Skills        Base Skills        Modified Skills
Skills           (Level 1)          (Level 20)          (Level 20)
Balance               3                  5                    6
Bluff                -2                 -1                    0
Concentration         7                  9                   10
Diplomacy            -2                 -1                    0
Disable Device        8                 12                   14
Haggle               -2                 -1                    0
Heal                 -2                 -1                    0
Hide                  3                  5                    6
Intimidate           -2                 -1                    0
Jump                  2                  3                    4
Listen               -2                 -1                    0
Move Silently         3                  5                    6
Open Lock             7                  9                   10
Perform              n/a               n/a                    n/a
Repair                4                  8                   10
Search                8                 12                   14
Spot                  2                  3                    5
Swim                  0                  1                    2
Tumble                5                  7                    8
Use Magic Device      2                  3                    5

Level 1 (Artificer)
Feat: (Past Life) Past Life: Artificer
Feat: (Selected) Point Blank Shot


Level 2 (Artificer)


Level 3 (Artificer)
Feat: (Selected) Precise Shot


Level 4 (Artificer)
Ability Raise: INT
Feat: (Artificer Bonus) Extend Spell


Level 5 (Artificer)


Level 6 (Artificer)
Feat: (Selected) Rapid Shot


Level 7 (Artificer)


Level 8 (Artificer)
Ability Raise: INT
Feat: (Artificer Bonus) Spell Focus: Evocation


Level 9 (Artificer)
Feat: (Selected) Greater Spell Focus: Evocation


Level 10 (Artificer)


Level 11 (Artificer)


Level 12 (Artificer)
Ability Raise: INT
Feat: (Artificer Bonus) Improved Critical: Ranged Weapons
Feat: (Selected) Toughness


Level 13 (Artificer)


Level 14 (Artificer)


Level 15 (Artificer)
Feat: (Selected) Improved Precise Shot


Level 16 (Artificer)
Ability Raise: DEX
Feat: (Artificer Bonus) Maximize Spell


Level 17 (Artificer)


Level 18 (Artificer)


Level 19 (Artificer)


Level 20 (Artificer)
Ability Raise: DEX
Feat: (Artificer Bonus) Empower Spell

[Lonnbeimnech]

When I read max dps I expected to see overwhealming crit squeezed in somehow.

Looks like a standard arti, except with extend instead of quicken.

Ya might want Insightful reflexes.

[Khatzhas]

Last I checked, Extend Spell does not apply to weapon or armour buffs. It isn't a good choice.

Swapping that for Empower and picking up Epic Spell Focus might be worthwhile.

You might want to look carefully at why you want Maximise and Empower however.