It looks okay in position like that.
But I always figure (especially at this limit) if he's got a big hand, he's paying me off anyway, so why slowplay it?
A lot of these guys will get it all in preflop with AK, but they wimp out when they miss the board (rightfully so). So I probably reraise.
As it stands, I think you probably should raise the flop or the turn so you can get all the money in by the river. Luckily he just pushed.