I don't like the 3-bet pre in hand 1, especially for that size. I'm with gabe on betting the turn. I think thats your best chance to get value from worse (unless you think he's making a bunch of spewy floats, like he ended up doing with 77).

Hand 2 I get in, probably 5b/stacking AK/KK+ there. I'd 5b smaller.

Hand 3 I fold, flop is close imo.