[einbert]

I totally disgree with your second assumption. He might very well check behind the turn and then call your push with a hand like QQ-KK.

If you want to take this pot away, leading into it seems to me the best way to attempt that. Just because an aggro player is leading into a pot doesn't mean they will call a bet for the same amount. I don't really like your chances though, you have a pretty small stack compared to the size of the pot and I think he will be inclined to call you down if he does have a decent PP or (obviously) an ace.

You sound very risk-averse about this money. Based on that, I think your best play is to fold and cash out immediately if you are the short stack.