KK, overpair, coordinated flop

[Boolean]

Villain in this hand is a very loose/passive player with a 65% Went to SD. The remaining players are new to the table and are basically unknowns. Because of my relative position to the flop raiser, there's no way possible I can protect my hand. These types of hands, you just have to get lucky I guess.

PokerStars 0.05/0.10 Hold'em (10 handed) converter

Preflop: Hero is MP3 with K[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/spade.gif[/img].
UTG calls, UTG+1 calls, <font color="#666666">1 fold</font>, MP1 calls, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">2 folds</font>, SB calls, BB calls, UTG calls, UTG+1 calls, MP1 calls.

Flop: (12 SB) 9[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(6 players)</font>
<font color="#CC3333">SB bets</font>, BB folds, UTG calls, UTG+1 calls, MP1 calls, Hero calls.

I call this due to the coordinated nature of the board. I intend to raise a blank on the turn or fold to a lot of action.

Turn: (8.50 BB) 2[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(5 players)</font>
<font color="#CC3333">SB bets</font>, UTG calls, UTG+1 calls, MP1 folds, <font color="#CC3333">Hero raises</font>, SB calls, UTG calls, UTG+1 calls.

Now that I'm thinking about it, this raise really accomplishes nothing. I don't think I'm winning here more than 25% of the time to make this for value. If I had position, the raise would protect my hand, but here it doesn't. Right concept, wrong application I suppose.

River: (16.50 BB) 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">SB bets</font>, UTG calls, UTG+1 calls, Hero calls.

With two overcallers, should I fold this? Will I be best more than 5% of the time?

Final Pot: 20.50 BB