what do I do?

PokerStars No-Limit Hold'em Tourney, Big Blind is t100 (6 handed) converter

If CO folds or calls I'm moving in, but after he moves in I wasn't sure what to do. Call and lose, I'm all but out. Call and win, I'm winning the whole thing. What do you guys think?

MP (t815)
CO (t2100)
Hero (t2150)
SB (t2820)
BB (t4040)
UTG (t1575)

Preflop: Hero is Button with K[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">MP raises to t815</font>, <font color="#CC3333">CO raises to t2100</font>, <font color="#666666">3 folds</font>.