Oopsy. I didn't remember what bonus Airs had.
Given that approach, Cha -2 is fine.
Water genasin should get the modifiers- but I think Str is better than Con. I don't remember what they had, but based on your net +2... Str +2, Con +2, Wis +2, Int -2, Cha -2. I would pull out the Con & Int...