KK on A high flop against 2 opponents

[Peter]

CO is 35/9 with postflop aggression factors of 0.5/0.4/1
Button is 35/25 with postflop aggression factors of 1.6/1.4/0.7.

Party Poker 20/40 Hold'em (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Peter is BB with K[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/heart.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">CO raises</font>, <font color="#CC3333">Button 3-bets</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Peter caps</font>, CO calls, Button calls.

Flop: (12.50 SB) 6[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Peter bets</font>, CO calls, Button calls.

Turn: (7.75 BB) 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Peter bets</font>, CO calls, Button calls.

River: (10.75 BB) 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Peter bets</font>,

How often am I good here?
How about calling preflop, since CO will almost never fold to a cap?