Agree with previous two posts. I don't like the open push at all, it seems like the least desirable way to try to get his money. If he has an overpair like you think and can't let go of them like you think, you shouldn't make the most forceful argument possible for him to fold; you should encourage him to make a mistake. A standard or weak c-bet (no less than 1/2 pot and no more than 2/3) is perfect.