100NL flush draw, stick it in?

[bsheck]

Merge Network (6-max). Villain has $91.15, I cover. He has been at the table for a little while, played a decent amount of hands, and likes to bet the flop when checked to. The last two times he has bet the flop in position he has folded to a minraise. I might have a weak table image. A few times I raised I had to fold on the flop.

Preflop I have A[img]/images/graemlins/diamond.gif[/img]T[img]/images/graemlins/diamond.gif[/img] UTG.
I raise to $4, Villain calls right behind me, all else fold.

Flop ($9.50) K[img]/images/graemlins/diamond.gif[/img]7[img]/images/graemlins/diamond.gif[/img]8[img]/images/graemlins/spade.gif[/img]
I check, he bets $4, I raise to $16, he makes it $48, I stick it in for $71.15.

Like the line? I figured he would bet almost any flop, so I would get value out of his nothing hands, and also I might get a decent hand to fold (maybe if he had 99 or a weak king) that would call if I bet out.

Once he reraises I have to stick it in, but I'm only a small underdog to a Kx with the flush draw and the overcard, and air has to be a small part of his range since he perhaps could just be tired of getting pushed around. Thoughts on how I played this?