I catch my straight, do I 3-bet or call?

BB is 49.4 11.6 40.3 w/ AF 1.4 over 553 hands.
MP2 is 34.6 7.7 30 w/ AF 2 over 26 hands.

Party Poker 2/4 Hold'em (9 handed) converter

Preflop: Hero is CO with Q[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, MP1 calls, MP2 calls, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">2 folds</font>, BB calls, MP1 calls, MP2 calls.

Flop: (8.50 SB) J[img]/images/graemlins/club.gif[/img], 2[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
BB checks, MP1 checks, MP2 checks, <font color="#CC3333">Hero bets</font>, BB calls, MP1 folds, MP2 calls.

Turn: (5.75 BB) T[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, MP2 checks, Hero checks.

River: (5.75 BB) K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">BB bets</font>, <font color="#CC3333">MP2 raises</font>, Hero's action.
<font color="blue"> I'm feeling a T, and if he's got one, then is there a good chance that he has a boat?</font>