How aggressive with KK here?

[jmgurgeh]

I put UTG on an A, so I think I'm probably behind until the river. But with a third club there, how far do I go after making my set? I don't check-call this do I? Comments on all streets are always welcome.

Party Poker 0.5/1 Hold'em (10 handed) converter

Preflop: Hero is MP3 with K[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
UTG calls, UTG+1 calls, <font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">3 folds</font>, BB calls, UTG calls, UTG+1 calls.

Flop: (8.50 SB) 5[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
BB checks, UTG checks, UTG+1 checks, <font color="#CC3333">Hero bets</font>, BB folds, <font color="#CC3333">UTG raises</font>, UTG+1 folds, Hero calls.

Turn: (6.25 BB) 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets</font>, Hero calls.

River: (8.25 BB) K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">UTG raises</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#CC3333">UTG caps</font>, Hero calls.

Final Pot: 16.25 BB

Results in white below: <font color="#FFFFFF">
UTG has Ac 8c (flush, ace high).
Hero has Kh Kd (three of a kind, kings).
Outcome: UTG wins 16.25 BB. </font>