KK early in Super Monday

[sublime]

Blinds 10/20

T1070

I raise UTG1 with black KK to 55 and get called by guy with T1665 two to my left. All else fold

No reads, other than table had not been overly loose, more on tighter side.

flop is 9 [img]/images/graemlins/diamond.gif[/img]Q [img]/images/graemlins/diamond.gif[/img]J [img]/images/graemlins/heart.gif[/img]

I bet T150, and get raised T350

Pot is now 640 and I have 865 left. Whats my plan?

I am a MTT newb, so please bear with me.