T9s flops trips and theres weird flop action

[tubasteve]

Full Tilt Poker, $0.50/$1 NL Hold'em Cash Game, 6 Players
LegoPoker Hand History Converter

BB: $131
UTG: $243.50
MP: $104.30
Hero (CO): $119.80
BTN: $84
SB: $38

Pre-Flop: 9[img]/images/graemlins/spade.gif[/img] T[img]/images/graemlins/spade.gif[/img] dealt to Hero (CO)
2 folds, <font color="red">Hero raises to $3.50</font>, BTN folds, SB calls $3, BB calls $2.50

Flop: ($10.50) T 8[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/heart.gif[/img] (3 Players)
SB checks, BB checks, <font color="red">Hero bets $7.50</font>, <font color="red">SB raises to $15</font>, BB calls $15, Hero...

SB is running at 37/7.55/oo over about 53 hands and is pretty bad; I feel pretty confident that I'm ahead of his range.

BB is unknown, but is 44/11 over his first 9 hands at the table.

I'm basically wondering how big of a pot I normally want to play here. Whats my plan for the hand?