Probably the biggest factor in my play would depend on his previous play and, while a little less important, I would have also liked to have know his stack size... I also don't like your half bet on the flop... While I realize you were trying to just win the pot there, I think I would probably put in a bet closer to the pot sized (maybe 600-700) since, IMO, the half bet invites both aces and smaller pocket pairs to call... bet bigger and the aces will probably push (depending on his chip stack) and underpairs would probably fold.... at least that is how I would play it with an average stack with say A-Q or A-K or say 10s... I might even just push in on the flop, if I was going to make the contingousy bet on flop, since making, a 700 bet is only going to leave you 850 in chips anyhow and you are basically pot committed at that point with that hand...
Anyhow, obiviously this wasn't the way you played it so, given the information above, I would probably fold and look for a better spot to push my last 1150 chips in the next couple rounds (since the blinds are currently 50-100) and they go up and come around fast in the shorthanded sit and gos...
Oh, BTW, I'm more of a cash game player then a tourney player so I reserve the right to be wrong...
