What would you do ?

It was the first hand in this tourney in which I was involved.

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (8 handed) converter

CO (t3100)
Button (t1460)
Hero (t1480)
BB (t1500)
UTG (t1500)
UTG+1 (t1460)
MP1 (t1500)
MP2 (t1500)

Preflop: Hero is SB with K[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, MP1 calls t20, MP2 calls t20, CO calls t20, <font color="#666666">1 fold</font>, Hero completes, BB checks.

Flop: (t100) 5[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(5 players)</font>
Hero: bets 80
BB: calls 80
MP1: folds
MP2: calls 80
CO: raises 80 to 160
Hero: ...

Results will be posted later.