Pre flop i would be raising to get marginal hands out with AJs or maybe even pushing to take the 175 already in the pot.

Post flop seems ok, though maybe a higher bet to get rid of the TONS of draws on this board and once you are raised in this limped pot you should know you are most likely drawing to a non diamond ace if not completely dead.

You are pot-committed on the turn...i think it is a good push here with TPTK, but i think you are beat here more often than not....reload/reenter.