Spell Level Optimization

[Miryafa]

Just throwing together classes and such, I've come up with this:
(Any +2 to Int race) Specialist Thassalonian Shadowcaster Wizard 10/Bloodmage 10

Specialization - extra spell slot per level
Thassalonian - extra spell slot per level
Shadowcaster - extra highest level spell slot
Bloodmage lv 10 - extra 10+19.5 avg =29 spell levels = 3 9th and 1 2nd
Int: base 18 + 2 racial + 5 levels + 5 tome/wish + 6 headband = 36 (+13)
4 4 4 4 4 4 4 4 4 with class spellcasting
4 3 3 3 3 2 2 2 2 from int
2 3 2 2 2 2 2 2 6 from wizard/bloodmage abilities
10 9 10 9 9 8 8 8 12 total

...for a total of (10x1)+...+(12x9) = 414 spell levels
And on a side note, the build is PFS legal, aside from being level 20.

Can we do better? Well, Mystic Theurges are known for having lots of spell slots, so...

Aasimar (with Heavenly Radiance) Specialist Thassalonian Shadowcaster Wizard 1/Cleric 2/Mystic Theurge 9/Bloodmage 8
Int: base 18 + 5 levels + 5 tome/wish + 6 headband = 34 (+12)
Wis: base 18 + 2 racial + 5 levels + 5 tome/wish + 6 headband = 36 (+13)
8 levels of bloodmage only grants 27 average spell levels, so 3 9th
Wizard spells:
4 4 4 4 4 4 3 3 2 from class spellcasting
3 3 3 3 2 2 2 2 1 from int
2 2 2 2 2 2 2 2 6 from wizard/bloodmage abilities
9 9 9 9 8 8 7 7 9 total

Cleric spells:
5 5 5 4 3 2 from class spellcasting
4 3 3 3 3 2 from wis
9 8 8 7 6 4 total

...for a total of 495 spell levels
That only narrowly beats out the wizard, and is an altogether less-playable build, but there you are.

That's the best I can do with just Paizo material. Can anyone else do better? What about just getting the most 9th level spell slots?

[lantzkev]

if you're going the mystic theurge route, I'd probably point you towards oracle/sorc or cleric/empyreal sorc.

Toss in Ring of wizardry for each lvl...

That right there would take the lvl 1-4 spells from 24 to 48. Also everything would be from one stat which would increase your wealth considerably.

[Miryafa]

Good point about the rings of wizardry (another point in the wizard's favor). That would take it to:
20 18 20 18 9 8 8 8 12 total, for 509 spell levels

Even in theurges, Sorcerers come out worse after items:
Sorcerer:
6 6 6 6 6 6 6 5 3 base
4 3 3 3 3 2 2 2 2 from Wis
10 9 9 9 9 8 8 7 5 total, for 341 spell levels
Wizard:
18 18 18 18 8 8 7 7 6, for 427 spell levels

However, oracle does get more slots than cleric at level 12, so replacing the 2 levels of Cleric with Oracle and 1 of Bloodmage with MT gives:
Bloodmage abilities reduced to 7+2*4.5 = 16 spell levels (1 7th and 1 9th)
Wizard:
18 18 18 18 8 8 8 7 7
Oracle:
6 6 6 6 5 3 from class spellcasting
4 3 3 3 3 2 from cha
10 9 9 9 8 5 total

Total: 604 spell levels

So the highest spell levels would then go to an Aasimar (with Heavenly Radiance) Specialist Thassalonian Shadowcaster Wizard 1/Oracle 2/Mystic Theurge 10/Bloodmage 4/wizard-progressing-prc 3 with 34 Int, 36 Cha, and Rings of Wizardry I-IV.