RUMBLETiGER
Adventurer
So I ask again, what do you imagine your character doing with this build? In my first post, I assumed an emphasis on the Rogue side, with spells to supplement skills.I agree, the bast gish are straight arcane caster. I just want to play it with the theme of wiz/rogue with emphasis on caster. It is also related to the background of the character.
What do you want a caster with some rogue-ish flavor to do? Especially since you're not doing it for the Sneak Attack, that leaves trapfinding and a lot of skills. A Wizard tends to not need to be great at skills, since spells like Knock replace Open Lock, Suggestion & Charm replace many social skills, using spells to trigger traps is easier than disabling them, and so on.
You help me understand what you have in mind, I can help you on how to build it.