[curtains]

I probably would call if he pushed yea....Once I raise to 300 there and the pot is 600, its very unlikely Im folding postflop when my opponent has only 900 behind.

Betting the flop might be superior, as the pot is big and allowing a miracle card is disastrous. For instance fi I had 600 and the pot was 900, Id move allin every time. I felt that in this case it was reasonable to check though.