[pineapple888]

Pre-flop is fine.

Post-flop, you are way ahead/way behind, so you don't particularly mind giving free cards. It's reasonable to check in this situation, and call anything he bets.

Personally, I jam and hope he calls me with something worse.

But your stacks are so small, I'm guessing all the money's going in no matter what, so I wouldn't stress about it too much.

Yes, you have to call his raise at the end.