small flush draw vs sLAG -- what line to take?

[bubaloo]

villain: 28/17/2.5 over 222 hands (his river AF is infinity so he probs has a super-user account or something)

reads: he seems pretty agro/spewy

Pacific Poker
No Limit Holdem Ring game
Blinds: $0.5/$1
5 players
Converter

Stack sizes:
UTG: $108.33
CO: $141.8
Bubaloo: $102.8
SB: $81.22
BB: $107.63

Pre-flop: (5 players) Bubaloo is Button with 6[img]/images/graemlins/spade.gif[/img] 3[img]/images/graemlins/spade.gif[/img]
2 folds, <font color="#cc0000">Bubaloo raises to $4</font>, SB folds, BB calls.

Flop: J[img]/images/graemlins/club.gif[/img] 8[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/spade.gif[/img] ($8.5, 2 players)
BB checks, <font color="#cc0000">Bubaloo bets $6</font>, <font color="#cc0000">BB raises to $18</font>, Bubaloo...?

stealing/drawing are possibilities, but he could also have a hand, is it best to b/3b(ai?) or just call?