Backdoor flush, raise or call?

[ahnuld]

Playing some live 1-3 poker at an Idian casino. I have been playing for 9 hours, so I have great reads on most people involved in the hands. I Have an extremly tight image, yet do not get a ton of respect preflop, just people assume I play only the best preflop starting hands. Villan in hand is a huge calling station and has paid off so many hands. At showdown i'd sday he's won 20% of time.

Anyways I limp with T [img]/images/graemlins/spade.gif[/img] 7 [img]/images/graemlins/spade.gif[/img] Villan is BB and raises to 10. I figure to call, becuase if I hit hard he will pay me off and I have position.

Flop comes 7 [img]/images/graemlins/heart.gif[/img] 9 [img]/images/graemlins/spade.gif[/img] 7 [img]/images/graemlins/club.gif[/img] He looks to bet, then checks. I figure hes gonna think im bluffing, and besides he lvoes calling, so I make it 20. He calls. Great

60 in pot. Turn is 3 [img]/images/graemlins/spade.gif[/img] Giving me trips and a backdoor flush. He checks, I bet 50, he quickly calls. Now I think he has an overpair and might be trapping me (in his mind) or maybe a flush draw, not sure, but he also might think Im bluffing and hes making a great A high calldown. I`d say the last is the most likely.

River comes Q [img]/images/graemlins/spade.gif[/img] making me a backdoor flush.
Villan wakes up and bets 75 into 160 pot. I have 180 left. Call or push. Folding is also an option but I cant see that being correct.