How to play double gutter in 3bet pot?

[BGnight]

Villian is an 19/14 reg. His name is Jschlach. I 3bet him earlier when I was button and he 4bet me and I folded, so he may think I can't be 3betting too light here.
PokerStars No-Limit Hold'em, $2 BB (5 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

saw flop|<font color="#C00000">saw showdown</font>

Hero ($207.05)
SB ($223)
BB ($207)
UTG ($344.70)
MP ($265.85)

Preflop: Hero is Button with 7[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">MP raises to $8</font>, <font color="#CC3333">Hero raises to $24</font>, <font color="#666666">2 folds</font>, MP calls $16.

Flop: ($51) J[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
MP checks, Hero checks.

Turn: ($51) 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP bets $32</font>, <font color="#CC3333">Hero raises to $183.05</font>