Party 20+2, pocket 5s, level 4 with 7 players left

[emptypockets]

What would you do in this situation?

Party Poker No-Limit Hold'em Tourney, Big Blind is t100 (7 handed) converter

CO (t2078)
Button (t435)
Hero (t935)
BB (t1085)
UTG (t995)
MP1 (t852)
MP2 (t1620)

Preflop: Hero is SB with 5[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/heart.gif[/img].
<font color="#666666">2 folds</font>, MP2 calls t100, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero?