TP + Flush Draw.....Overplaying my hand?

[TxDozerMan]

Party Poker No-Limit Hold'em Tourney, Big Blind is t30 (10 handed) converter

This is a hand I am having trouble with, This situation came up twice for me recently. Am I overplaying my hand here?

saw flop|<font color="#C00000">saw showdown</font>

UTG+2 (t785)
MP1 (t655)
MP2 (t1500)
<font color="#C00000">Hero (t640)</font>
CO (t670)
Button (t650)
SB (t675)
<font color="#C00000">BB <font color="#A500AF">(Villan)</font> (t780)</font>
UTG (t1140)
UTG+1 (t505)

Preflop: Hero is MP3 with A[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/spade.gif[/img].
UTG folds, UTG+1 folds, UTG+2 folds, MP1 folds, MP2 folds, <font color="#CC3333">Hero raises to t100</font>, CO folds, Button folds, SB folds, BB <font color="#A500AF">(Villan)</font> calls t70.

Flop: (t215) 8[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Villan checks, <font color="#CC3333">Hero bets t125</font>, <font color="#CC3333">Villan raises to t250</font>, <font color="#CC3333">Hero raises to t540 (All-In)</font>, Villan calls t290.

When villan check raises, what possible hands do you put him on? Should I fold here? I am thinking that there is at least a good chance he just saw (intended) weakness in my smallish flop bet. Any comments/suggestions will be appreciated.