Ace-king in Bubble (3rd in chips)

[icewizard008]

Did I play this correctly? Or should I have folded and let the short stack eventually go all in? BB seemed fairly tight before, but since he has so many chips he might be willing to take a coin flip to knock me out. Top 3 pay in the SNG.

PokerStars Tournament, Big Blind is t400 with t25 antes (4 handed) Converter on pregopoker.com

CO (t1820)
Button (t3055)
Hero (t2365)
BB (t6260)

Preflop: Hero is in SB with K[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/club.gif[/img]
<font color="gray">CO folds</font>, <font color="gray">Button folds</font>, <font color="red">Hero raises to t2340