PokerStars $11 PL. What's my line?

[ajizzle]

Played a new super-aggro style at my first table and it worked wonders. Built up my stack to 3700 without picking up any real monsters. Then my table broke, and i was moved to a table with some bigger stacks. No huge stacks, but 6 out of 9 were above avg, and other 3 werent far behind. Decided to play a lot tighter.

Dealt 8s5s in the BB. blinds are 50/100.
UTG+1limps. He has been playing a lot of pots PF for raises, and now limps in EP??? MP calls, tight player. SB limps. No read on him.

Stack sizes are as follows:
SB: 1810
ME: 3705
UTG+1: 5080
MP: 2990
avg: 2500

Flop comes 9d 6h 7h.

SB checks, I bet 250.

I do this so that if i get callers, the pot is big enough to make a big scary bet on the turn if a scare card doesn't hit.

UTG+1 calls. my read is that he could have almost any pair and any draw, even a one card gutshot.

MP raises to 700.
SB folds.
up to me. What range of hands do I put him on, and given those hands, what's my move. I should mention that this player has been very tight so far, bordering on weak tight postflop play.

What's my move.

[benneh]

you flopped a straight, someone raised your tiny bet, and you're asking what to do?

POT IT!

[ajizzle]

What if the only two hands i put him on are a flush draw and a set?

Do I still pot it? Or am I better off seeing a turn card?