Got a piece of the flop with a big draw - how do you play it?

[MN_Mime]

UTG + 1 seems LAGgish PF and passive post-flop, but only 11 hands - 45.45 VPIP/9% PFR/Agg .1

BB: HERO 6[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/spade.gif[/img]


PRE-FLOP
UTG calls, UTG + 1 raises, MP1 calls, 5 folds, HERO calls, UTG calls.

Was the pre-flop call too loose?


FLOP Q[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/diamond.gif[/img]
HERO checks, UTG checks, UTG + 1 bets, MP1 folds, HERO bets, UTG calls, UTG + 1 calls.

TURN 7C
HERO bets, UTG folds, UTG + 1 calls.

RIVER 9H
HERO... ?

How was my line on this and how do you handle the river play?