Chaotic Evil Warpriest - Full-BAB Dip / Prestige

[SillyString]

I've got a 14th level CE Warpriest that focuses on dual wielding kukri with weapon finesse. He's recently betrayed his deity in such a way that the GM has decided he can no longer take levels in warpriest, but due to the unique nature of his betrayal, he's managed to "steal" enough of his deity's power to keep the full benefits of his current warpriest levels. (depending on whether or not I complete a side quest, I may or may not be able to resume taking WP levels before the campaign ends without worshipping the deity).

Things my GM has allowed me to do:
-Shift my alignment by one step (to represent a tipping point for my character betraying his deity) Edit: or shift it diagonally to N
-Retrain a few feats/skill points if I want to qualify for prestige classes

Ideally I'd be looking at taking something full BAB that benefits from my high Dex & Wis - Monk would have been good for giving me wis to AC, but we already have a martial artist monk / rogue in the party and we all agreed I should pick something different, and the CE (possibly becoming NE or CN) alignment prevents me from taking other monk archetypes.

Any Suggestions for full-BAB dips or prestige classes? Preferably that make some use out of having high wisdom? (wis to AC or something equally useful would be good but open to any suggestions.)

Edit: He's also willing for my character to shift to True Neutral, as well as CN or NE.