Preflop you need to make it atleast $48. It's 3 handed so you should be doing this w/ a wide range.

Flop is good, but I think there is also some merit to pushing. You really don't want to see a diamond come down.

What about donking the turn for $100? It looks weak enough that if he has top pair he should at least call if not push. If he has a flush draw I could see the same thing.