Good spot to wait for the turn?

[SlantNGo]

I think I'd just raise the flop here. This hand is probably getting checked to you on the turn too often without a read on BB, so I think we raise the flop here for immediate value.

With that being said, I can count 21 "scare" cards for us at this point, any A/K/Q, any heart, two 9s, so that part of the criteria for waiting until the turn is met. If I knew BB would bet a turn blank, or even better, if after BB checked, CO would bet a turn blank, I think I would wait till the turn.

The other benefit to raising the flop in situations like these is that it gets us to a cheap showdown often when an overcard comes on the turn. If you just call the flop, and overcard comes, you're paying another 2 BB, so 2.5 BB total from the flop to SD. If you raise the flop, you bet the turn despite the overcard (you can fold to a raise, right?), then check behind on the river and see the showdown for 2 BB total.