PLO8B $0.50/$1.00 - Did I play the flop too weakly?

[dren]

PokerStars Pot-Limit Omaha/8, $1.00 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

UTG+1 ($160.05)
MP1 ($88.25)
MP2 ($91.75)
MP3 ($75.45)
CO ($105.85)
Button ($56.70)
SB ($89.75)
Hero ($118.85)
UTG ($111.10)

Preflop: Hero is BB with 5[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/club.gif[/img].
<font color="#666666">2 folds</font>, MP1 calls $1, <font color="#666666">4 folds</font>, SB completes, Hero checks.

Flop: ($3) 9[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets $2.85</font>, <font color="#CC3333">MP1 raises to $5.7</font>, SB folds, Hero calls $2.85.

Turn: ($14.40) 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, MP1 checks.

River: ($14.40) 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $4</font>, MP1 calls $4.

Final Pot: $22.40

Results in white below: <font color="#FFFFFF">
Hero has 5c Td Qh 8c (Low: 8, 7, 5, 4, 3 | High: straight, jack high).
MP1 has Qc 7s Qd 7h (High: three of a kind, sevens).
Outcome: Hero wins $22.40. </font>

I'm fairly new to PS and don't know any of the players, so I'm treading carefully.

Did I play the flop too weakly on this hand?

Tight table, virtually no pre-flop raising.
I have no reads on players styles.

I have been getting my flopped nuts outdrawn a fair bit recently, so am playing slightly cautious.

After the villain checks the turn I know I'm ahead, but should I have re-raised on the flop - I was most afraid of him having a big piece of the flop + a flush draw.

[odomination]

Yeah, put in a third raise on the flop b/c youve got a draw to the higher straight. In this case you will be making him pay for a flush draw or a full house draw and if he has T8 he might get it all in with you and you can improver w/ a bunch of cards to a better srtaight and scoop. If he has T8 of spades then be prepared to get it in behind.

[bbartlog]

I think your freeroll to a higher straight is decent enough to put in another raise on the flop. There are hands that could out-freeroll you (even a few that are equity favorites despite not having the nuts on the flop) but not many.
I don't like the river bet. I think you pay off a middle flush here much more often than you get paid by a set (or you find that opponent has a better low and you split).