Yeah, I'd push PF, he's already commiting half his chips with the raise, there really isn't a flop where he won't raise all-in, he could have a legit hand but blinds hit him for 300 in the next two hands putting him down 990 if he folds, he may just want to pick up the blinds to get a free round. If you decide to play the hand you should put him all in preflop.