Bet this river?

[Nutz&Boltz]

Party 1-2 I have no reads on these players. Only that the table is averaging 8bb per pot which is good for the mostly tight party 1-2 games.
Hero is in MP3 w/ A spades Q hearts

UTG limps, Hero raises, CO calls, Button calls, Blinds fold, UTG calls

Flop (4 players and 4BB) K [img]/images/graemlins/club.gif[/img],3 [img]/images/graemlins/diamond.gif[/img],T [img]/images/graemlins/diamond.gif[/img]
UTG checks, Hero checks, CO checks, Button Checks
I usually will not bet the flop in this situation with 3 or more opponents. Weak-Tight?

Turnstill 4 players and 4BB) 5[img]/images/graemlins/spade.gif[/img]
checked around. 4-1 odds to bluff, bet?

Riverstill 4 players and 4BB) J [img]/images/graemlins/diamond.gif[/img]
This gives me a st8 but someone could have a flush. With no one showing any aggression I think me st8 is good. I bet and you guessed it Button raises. I call. He shows 9 [img]/images/graemlins/diamond.gif[/img]7 [img]/images/graemlins/diamond.gif[/img] for the flush.

Bet river? Call raise?

My game has many leaks lately, any comments are greatly appreciated.