I agree that the flop bet was too big. I would probably half bet 3/4 pot here maybe slightly less. The problem comes after than when he calls and 10 opens up lods of hnads that have you beat. I would say you would need to follow up with another bet on the turn but be willing to fold if you get re-raised. Having said that if he has you beat with a straight then he is probably only calling the turn bet in which case I think you have to check the River and let it go if he bets.