[Moozh]

A) I'm 3-betting here with a lot. Probably a middle queen would be as low as I'm willing to go. Any ace, king, and pair are easy 3-bets.

B) I'd ease up a bit and limit things to middle kings, like your K7o. The strange thing is that this situation is more profitable since he will be able to pay you off if you hit. The deciding factor for me is that against maniacs, I like to have hands I can go to war with and still possibly win unimproved.