No undead my gm rules that outside of ethereal enemies like ghosts all undead use their con mod normally and ethereal enemies use wisdom mod
Dips are allowed but only for 3-4 levels total and the main function cannot scale off class levels. For example water dancers’ Nereid’s Grace
I start at level 8
I would prefer to focus on feats since my dm lets us feat buy in exchange for drawbacks.
My dm does not have alignment restrictions on classes but does place them on deities.
Nereid’s Grace (Su) When unarmored and unencumbered, a water dancer adds 1 point of Charisma bonus per monk level to his Armor Class as a dodge bonus. If he is caught flat-footed or otherwise denied his Dexterity bonus, he also loses this bonus. He uses his Charisma score instead of his Wisdom score to determine the size of his ki pool and the DC and effects of monk class features. This replaces the bonus feat the monk normally gains at 1st level.
What I've got so far:
AC Bonus (Ex) When unarmored, an enthusiast adds her Charisma bonus (if any) to her AC and her CMD. These bonuses apply to AC even against touch attacks or when the enthusiast is flat-footed. She loses these bonuses when she is immobilized or helpless, when she wears any armor, or when she carries a shield
Sidestep Secret (Su): Your innate understanding of the universe has granted you preternatural reflexes and the uncanny ability to step out of danger at the very last second. Add your Charisma modifier (instead of your Dexterity modifier) to your Armor Class and all Reflex saving throws. Your armor’s maximum Dexterity bonus applies to your Charisma instead of your Dexterity Link
Lore Keeper (Ex): Instead of encyclopedic knowledge, you learn most of your information through tales, songs, and poems. You may use your Charisma modifier instead of your Intelligence modifier on all Knowledge checks. link
Self Delusion (Feat): You may add your Charisma modifier, rather than you Wisdom modifier, to your Will saving throw bonus.
Scion of War (Feat): You use your Charisma modifier to adjust Initiative checks instead of your Dexterity modifier.