thats a tough situation. I would have probably have raised to 100 and even if he does call and hit the ace, take comfort in knowing you're charging him more with his weak hand. As for the flop bet, I hate making a strong raise preflop and checking the flop. But this is one of this situations I might check. If you going to lead at the turn, I'd bet more, somewhere in the neighborhood of 90 or 100. The smallish bet of 60 just appears weak to me. I also don't like the 140 bet on the river. You're only going to get called by a better hand. Another strategy might be leading out on the flop and then shutting down when he calls you. It's more easy to put him on an ace that way. You're check on the flop and bet on the turn might look suspect to your opponents and encourage them to stick around with hands you may or may not be able to beat, and you'll be stuck playing the guessing game, something that's never fun in no limit.