turn strategy question

[SenecaJim]

5-10 live

just back from break, had to post MP. got K [img]/images/graemlins/diamond.gif[/img]6 [img]/images/graemlins/diamond.gif[/img]. Checked option, 6 players.

Flop comes 4 [img]/images/graemlins/diamond.gif[/img]9 [img]/images/graemlins/club.gif[/img]7 [img]/images/graemlins/diamond.gif[/img] Checked to me, I lead, all call. (12 sb's)

Turn is 9 [img]/images/graemlins/diamond.gif[/img] sb checks, BB leads out one fold, one caller to me. (8 BB)

Here is my question with 2 left behind me. Probably one or maybe both will call. I know you won't fold the A [img]/images/graemlins/diamond.gif[/img] or a 9 (obviously) and want small diamond to stay.

I reasoned at time to raise to charge those holdings to draw against my flush or to possibly fold a paired 4 or 7.

Was my reasoning justified or should I have gone for overcalls on turn and waited to raise on river IF bet into?