Play on the bubble

[DarkKnight]

680+ player tourney at Party,
about 65 players left 60 make the money.

Limit Blinds are 300/600. I have about T7500
I'm dealt K [img]/images/graemlins/club.gif[/img]J [img]/images/graemlins/club.gif[/img] UTG. I open for
a raise.

Folded to the SB (~T12000) who calls 2 bets cold.

Flop come J 9 5 Rainbow.
SB Comes out betting. I raise. SB Reraises.

What's your plan and why?DK