Hand 1: I agree with EP9 that I don't know about the turn bet. I would like it better if you were last to act but I probably just check fold after i get calls on the flop.
Hand 2: I don't think I would cap preflop. I would call his 3 bet and often check raise many flops whether I hit or not. This flop, I'm check raising. If he 3 bets, I think I often just call him down if he's a maniac like he seems to be. The only hands that might be justified playing like that is AA, KK or QQ and maybe KQ but that would be a loose preflop 3 bet.