A good night -vs- a bad beat

[KingToad]

I playing at party $25 NL.

I have $150, one other (the caller) has $145, everyone else $10 - $30.

I am dealt KK on the button, 6 limpers, I raise to $4, 2 call. Pot at $15.

Flop: 8 [img]/images/graemlins/spade.gif[/img] 9 [img]/images/graemlins/heart.gif[/img] 5 [img]/images/graemlins/club.gif[/img]

checked to me I bet $15, one fold, one call

Turn: J [img]/images/graemlins/diamond.gif[/img]

He checks, I bet $15, he calls

River 6 [img]/images/graemlins/club.gif[/img]

He checks I bet $15, he calls


He ended up playing A7, to take the $105.

Did I play this poorly? Looking at it now I should have bet more on the flop? Would $30 been better, or was he calling anyway. Afterwards I commented wow, A7. He said the Ace is what kept him in.