Straight, very passive, very ugly?

[Roy6]

UTG is terrible LAG 68/17/2.81, BB is fishy-passive

When UTG 3-bets the flop I put him on a Jack.
On the turn I hesitated to call or raise.
UTG can't have AJ since there was no PFR, also KJ is unlikely because of this. I was a bit afraid of a boat and would rather have fishy BB overcall this.
I think my call is terrible here. I have a nut straight-flush draw too.
On the river I really got scared of QJ, 8J or TJ so I decided just to call and go for a possible overcall because I can't fold to a 3-bet and the board is already 4-to-straight now, so BB is less likely to call 2 cold with just one pair.

Party Poker 3.00/6.00 Hold'em <font color="#0000FF">(6 handed)</font> link

Preflop: Hero is Button with 9[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/club.gif[/img].
UTG calls, <font color="#666666">1 folds</font>, Hero calls, <font color="#666666">1 folds</font>, BB checks.

Flop: (3.33 SB) T[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">BB bets</font>, UTG calls, <font color="#CC3333">Hero raises</font>, BB calls, <font color="#CC3333">UTG 3-bets</font>, Hero calls, BB calls.

Turn: (6.17 BB) 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">UTG bets</font>, Hero calls, BB calls.

River: (9.17 BB) Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">UTG bets</font>, Hero calls,