No way in hell I ever check raise this. I'm probably check folding. If I feel like getting really risky or really think he'll fold I may bet 200 or so. You have no kicker whatsoever and you're playing against the only guy in the tournament with enough chips to bust you. Plus two players in the tournament have less than 5 times the big blind and the other has less than half your chip stack. I think there's no point trying to bluff the big stack with a mediocre hand and very little drawing possibilities. In fact I don't think there's any reason to so much as play a hand against the big stack unless you have a real top premium hand.