25NL Following up on a resteal. How far to take it?

[RapidEvolution]

Villain is 29/18/1.5 over 200ish hands with 30% to steal blinds.

PokerStars No-Limit Hold'em, $0.25 BB (7 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

MP2 ($2.55)
CO ($30.20)
Button ($16.45)
Hero ($39.10)
BB ($19.80)
UTG ($29.25)
MP1 ($6.65)

Preflop: Hero is SB with 8[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/heart.gif[/img].
<font color="#666666">4 folds</font>, <font color="#CC3333">Button raises to $0.75</font>, <font color="#CC3333">Hero raises to $2.4</font>, <font color="#666666">1 fold</font>, Button calls $1.65.

Flop: ($5.05) 2[img]/images/graemlins/club.gif[/img], 2[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $3.5</font>, Button calls $3.50.

Turn: ($12.05) T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero contemplates firing a second barrel



Do you fire again here? If so, for how much?