lead flop is fine, but I think players would very often raise your lead with overcards since you hardly has there 9x, so I think better option is to c/c flop and lead turn
This looks a lot stronger, they won´t really mess around now, since you´re reping 9x and not really b/f at any point and if they have air they have to fold.
I think you can´t really c/c turn profitable, so if you don´t want to lead out it is c/f or c/r to me. I think players would b/f there overpairs and they sometimes barrel there air, which they would easily fold and you don´t have to worry about facing river bet