The martial hexblade needs Sense Motive as a skill, it gets all of the Cha social skills (this is my opinion, I know that the official Hexblade doesn't get it and I think that is stupid). Also, does the casting a spell part of Negation take place as part of the action as Negation? If so I'd say it is a free action, just for clarification.
What's the stat point buy?
We still doing flaws?
Okay, I've changed my mind completely. I went back to the list of stuff you gave of your homebrew you wanted me to play and now I'm making a Chaos Monk instead.
Edit: The Kung Fu feats should probably say "Any Chaos Monk class features, Chaos Feats, or Mutations" instead of "Anything your character uses" because Anything could include Spells for a sorcerer for example or bard class features for example.
Edit edit: Reading the mutations, I'm not sure if they should be included or would have counted as included in the current feats...