Overpair to Double Paired Board, What Line?

[_Kevin_]

Both villians here are loose and too passive but aren't terrible post flop. Both are probably 40-45% VP$IP with post flop aggression factors of about 1.0. MP2 is a little more aggressive but not much. Neither has shown down pure preflop trash but have shown down middle or bottom pair as well as busted draws with no pair on the river. They have also not pushed good hands against an aggressor (i.e., top pair, etc.). They will both fold the flop is they completely miss (at least that's my assumption since I've seen both fold the Flop when the PFR continuation bet). I can't believe PF and flop aren't standard but feel free to comment.

What is your line for the rest of the hand? Please give your reasoning.

Party Poker 0.50/1 Hold'em (10 handed) FTR converter on zerodivide.cx

Preflop: Hero is CO with K[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls, <font color="#666666">2 folds</font>, MP2 calls, MP3 calls, <font color="#CC3333">Hero raises</font>, Button calls, <font color="#666666">2 folds</font>, UTG+1 calls, MP2 calls, MP3 folds.

Flop: (10.50 SB) Q[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
UTG+1 checks, MP2 checks, <font color="#CC3333">Hero bets</font>, Button folds, UTG+1 calls, MP2 calls.

Turn: (6.75 BB) Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
UTG+1 checks, MP2 checks, Hero ???