AKs - What's my play?

[SaintAces]

9 person tourney - 20 bucks to enter - first place takes all... (First question - you play a Winner Takes All like a normal NL cash game right?) All 15 years old or so. Average talent.

Final three and I am BB and chip leader at 800. SB has 400 and UTG has 300. Dealt AsKc and plan to raise 100, but UTG moves all in. Can have a HUGE range of hands. However, I would bet money that he has a combination of two facecards. No pockets though. I still think I am easily going to call, but 400 pushes in also, making it half my stack to call. That is basically a pocket pair, and I have no idea what kind. I muck.

Anyone make this call?