Probably not the best position to push for reasons already given. However, the one thing going for you is that last time that you did that you showed AA. Depending on your table image (do you resteal often, are you aggressive, etc), he may give it up unless he has a powerhouse. It's probably burned in his mind that you whipped him last time this happened. I suppose the bubble is, of course, a second thing going for you I suppose. Given those, pushing wouldn't be horrible if you have a VERY strong read that he plays weak cards/can lay down something like KQ, AJ, AT, etc.

Will