Wait, do you mean you favor Persuasive because it gives them a boost to Intimidate, despite them not having any ranks in?
Negotiator: +2 to Diplomacy, Sense Motive
Persuasive: +2 to Bluff, Intimidate
I'd like to keep some Balance, Jump, and Tumble. Fox's strike me as rather agile creatures, and Tumble would benefit the delivery of the touch attack. I'd prefer to at least keep 5 ranks in Jump and Tumble for the synergy bonuses.
Negotiator is fine by me.
Suggested weaponry for attack lines (keeping in mind Weapon Finesse)?
Alignment: Always/usually chaotic evil?
Advancement: 7-18 HD (Medium) or by character class?
CR 5?