Wait for the turn?

[Duerig]

Haven't posted a hand here for a while. I have a question about whether it was a good idea to wait for a safe turn card to raise here. And what to do since I didn't get it. Oh and feel free to comment on any other part of the hand as well.

Party Poker 1/2 Hold'em (9 max, 9 handed) converter

Preflop: Hero is CO with K[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/spade.gif[/img]. MP1 posts a blind of $1.
<font color="#666666">2 folds</font>, MP1 (poster) checks, <font color="#666666">1 fold</font>, MP3 calls, Hero calls, Button calls, SB completes, BB checks.

Flop: (6 SB) 5[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(6 players)</font>
<font color="#CC3333">SB bets</font>, BB folds, MP1 folds, MP3 calls, Hero calls, Button calls.

Turn: (5 BB) 9[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">SB bets</font>, MP3 calls, Hero...?