Hand 1 I'm definitely reraising preflop. Doesn't need to be huge. Something like $8 would work well. As played I think I like checking behind on the turn. And I think you need a good read to call that river push.
Hand 2 is goot. What did you put villian on? I think I'm value-betting here almost everytime. Something like 1/2 should be good. If you get raised then you can toss your hand easily. (I can't believe he called you down w/55 LOL)