[fallen]

I think PF & the flop look ok. The idea of a check raise on the turn seems ok to me but you bet way to small.
Both players only have to call 300 more into a pot of 2250.
You're giving these guys over 7 to 1 to call with their draws. You need to charge more when the pot is this big. Make them pay to hit that runner runner.
I think check raise all-in here is the best play given the size of the pot & the stack sizes.