Incorrect call on the flop

[rjacobs003]

Multi-tabling at Party so have to be quick on the draw [img]/images/graemlins/smile.gif[/img] here:

No reads on opponents at the moment and my question is around the flop call. No time to be calculating odds to the end so I do a quick 3 outs for the straight draw (3x4 =12%) add 4% for the BDFD and reckon calling one bet for 6 in the pot is decent. Is this too marginal. More importantly how do you do these calcs faster???

Party Poker 0.50/1 Hold'em (10 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is UTG with Q[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/heart.gif[/img].
Hero calls, UTG+1 calls, <font color="#666666">5 folds</font>, SB completes, BB checks.

Flop: (4 SB) 8[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(5 players)</font>
<font color="#CC3333">SB bets</font>, BB calls, Hero calls, UTG+1 folds.

Turn: (3.50 BB) J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">SB bets</font>, BB calls, <font color="#CC3333">Hero raises</font>, SB calls, BB calls.