Nasty KK spot

[hansarnic]

$400NL Party 6-max

I raise black KK UTG to 15.

MP, button & SB call. We all have about $400.

Flop (65) is 9 [img]/images/graemlins/heart.gif[/img] 7 [img]/images/graemlins/heart.gif[/img] 4 [img]/images/graemlins/heart.gif[/img]

SB leads for 35

The table is new so no reads other than a few orbits I have played with SB previously. He seemed solid if unremarkable.

I didn't really feel like any options appealed at this point. What's your plan for the hand?