2.20 - KK, mid-late in tourney, ace on flop

[akak]

I didn't have a read on this guy. With so many people left and the blinds getting large, what do you do here?


Ultimate Bet No-Limit Hold'em Tourney, Big Blind is t100 (9 handed) Hand History converter Courtesy of PokerZion.com

UTG+1 (t310)
MP1 (t1620)
MP2 (t1550)
Hero (t1290)
CO (t2590)
Button (t3140)
SB (t1245)
BB (t1480)
UTG (t1775)

Preflop: Hero is MP3 with K[[img]/images/graemlins/heart.gif[/img]], K[[img]/images/graemlins/diamond.gif[/img]].
[color=Gray]4 folds</font>, [color=Red]Hero raises to t350</font>, [color=Gray]2 folds</font>, SB calls t300, [color=Gray]1 fold</font>.

Flop: (t800) A[[img]/images/graemlins/spade.gif[/img]], 3[[img]/images/graemlins/heart.gif[/img]], 3[[img]/images/graemlins/spade.gif[/img]] [color=Blue](2 players)</font>
[color=Red]SB bets t800</font>, Hero...