You could always cheese a build using the Mage Guild bonuses from Inner Sea Magic. All to easy to make up 1-3 CL including spell progression for some gold and trivial skill checks. At 35 Fame so level 7-8 depending, you could make up 3CL in one class and 1CL in another.

So things like Paladin2/Scaled Monk1/Sorcerer5 will cast like a level 8 Sorc with Cha to saves and AC. Throw in some Favored Prestige Class and you can Gish into DD/EK and still be a full caster.

Wiz3/Cleric1/MT4 using Equipment Trick Sunrod (Like the Sun) for early entry will cast as a Wiz8/Cleric8.

Could always go party of 1. Play a tier 1 caster grab a UMD using Improved Familiar and a tanky Animal Companion and enjoy being a one man army.