K9o Blind steal situation, turn?

[nomadtla]

SB just sat down so no reads whatsoever except folded BB to steal (not from me). BB is pretty tight and doesn't fight blind steals without a legit raising hand.

Crypto
10 players $1/$2

Preflop:
Hero has K [img]/images/graemlins/spade.gif[/img] 9 [img]/images/graemlins/diamond.gif[/img] On the Button
Folds to Hero, <font color="red"> Hero Raises </font>, SB calls, BB folds.

pretty average blind steal hand vs. one unknown and one who doesn't defend enough

Flop: (5 SB) T [img]/images/graemlins/heart.gif[/img], T [img]/images/graemlins/club.gif[/img], 8 [img]/images/graemlins/heart.gif[/img] (2 players)
SB checks, <font color="red">Hero bets,</font> SB calls

standard continuation bet

Turn: (3.5 BB) J [img]/images/graemlins/spade.gif[/img]
SB checks, hero ????

I have the OESD, should I take the free card, or semi-bluff