A build that should suit your wishes:
Note: Paladin Dilettante only allows you to use 5 points of your Charisma bonus to add to saves. Instead, I had you take two levels of actual Paladin, which lets you add ALL of your Charisma bonus (Getting it to about +11 should be straightforward) to saves, as well as granting armor proficiencies and weapon proficiencies which will be a vast help at low levels. Elf Arcane Fluidity also permits this. Mithral armor is your friend.
Also, this will let you dress in a somewhat more manly fashion than an evening gown and high heels, should you so choose.
Since you get a Dilettante feat, I chose Barbarian for you. The extra bit of Constitution and Hit Points will be handy. If you want to use healing items beyond the Cure Wands that you get from the Paladin levels, you might also choose Favored Soul Dilettante and rearrange enhancement points accordingly.
As far as the spell list, it's fairly rough. I'm sure you can find all sorts of "Take these spells if you're a Sorcerer" threads in the Sorcerer forums.
Code:
Character Plan by DDO Character Planner Version 3.8.0
DDO Character Planner Home Page
Level 20 Lawful Good Half-Elf Male
(2 Paladin \ 18 Sorcerer)
Hit Points: 234
Spell Points: 1851
BAB: 11\11\16\21
Fortitude: 21
Reflex: 14
Will: 19
Starting Feat/Enhancement
Abilities Base Stats Modified Stats
(28 Point) (Level 1) (Level 20)
Strength 12 12
Dexterity 8 8
Constitution 14 16
Intelligence 10 10
Wisdom 8 8
Charisma 18 27
Starting Feat/Enhancement
Base Skills Modified Skills
Skills (Level 1) (Level 20)
Balance -1 -1
Bluff 4 8
Concentration 6 28
Diplomacy 8 23
Disable Device n/a n/a
Haggle 4 8
Heal -1 -1
Hide -1 -1
Intimidate 4 8
Jump 1 1
Listen -1 -1
Move Silently -1 -1
Open Lock n/a n/a
Perform n/a n/a
Repair 0 0
Search 0 0
Spot -1 -1
Swim 1 1
Tumble n/a n/a
Use Magic Device n/a n/a
Level 1 (Paladin)
Feat: (Half-Elf Dilettante) Half-Elf Dilettante: Barbarian
Feat: (Selected) Toughness
Level 2 (Sorcerer)
Level 3 (Sorcerer)
Feat: (Selected) Extend Spell
Level 4 (Sorcerer)
Ability Raise: CHA
Level 5 (Sorcerer)
Level 6 (Sorcerer)
Feat: (Selected) Maximize Spell
Level 7 (Sorcerer)
Level 8 (Sorcerer)
Ability Raise: CHA
Level 9 (Sorcerer)
Feat: (Selected) Empower Spell
Level 10 (Paladin)
Level 11 (Sorcerer)
Level 12 (Sorcerer)
Ability Raise: CHA
Feat: (Selected) Spell Penetration
Level 13 (Sorcerer)
Level 14 (Sorcerer)
Level 15 (Sorcerer)
Feat: (Selected) Greater Spell Penetration
Level 16 (Sorcerer)
Ability Raise: CHA
Level 17 (Sorcerer)
Level 18 (Sorcerer)
Feat: (Selected) Spell Focus: Enchantment
Level 19 (Sorcerer)
Level 20 (Sorcerer)
Ability Raise: CHA
Enhancement: Elven Arcane Fluidity I
Enhancement: Elven Arcane Fluidity II
Enhancement: Elven Arcane Fluidity III
Enhancement: Human Adaptability Charisma I
Enhancement: Human Greater Adaptability Constitution I
Enhancement: Human Improved Recovery I
Enhancement: Sorcerer Improved Empowering I
Enhancement: Sorcerer Improved Empowering II
Enhancement: Sorcerer Improved Maximizing I
Enhancement: Sorcerer Improved Maximizing II
Enhancement: Paladin Focus of Good I
Enhancement: Racial Toughness I
Enhancement: Racial Toughness II
Enhancement: Racial Toughness III
Enhancement: Sorcerer Lineage of Elements I
Enhancement: Sorcerer Lineage of Elements II
Enhancement: Sorcerer Lineage of Deadly Elements I
Enhancement: Sorcerer Lineage of Deadly Elements II
Enhancement: Sorcerer Elemental Manipulation I
Enhancement: Sorcerer Elemental Manipulation II
Enhancement: Sorcerer Spell Penetration I
Enhancement: Sorcerer Spell Penetration II
Enhancement: Sorcerer Spell Penetration III
Enhancement: Sorcerer Energy of the Dragonblooded I
Enhancement: Sorcerer Energy of the Dragonblooded II
Enhancement: Sorcerer Energy of the Dragonblooded III
Enhancement: Sorcerer Energy of the Dragonblooded IV
Enhancement: Sorcerer Charisma I
Enhancement: Sorcerer Charisma II
Enhancement: Sorcerer Charisma III
Enhancement: Half-Elf Constitution I
Enhancement: Paladin Toughness I
Enhancement: Sorcerer Wand and Scroll Mastery I