1) I was going to say fold flop but I guess its not that bad, shove river.
2) Iso 5X, bet big on the flop, shove turn. (Only got 45bb)
3) Fold pre.
4) Meh, A high is good a lot, so I would call down as long as he was min-betting. Not loving it tho.
5) Shove river. I think you could get a few more bbs out of him on flop/turn.