25NL Kings on ok flop facing AI-RR kinda deep

[4drugmoney]

Villian is 18%VPIP over 300 hands. Seems pretty straightforward.

Full Tilt No-Limit Hold'em, $0.25 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Hero ($38.05)
SB ($7.50)
BB ($23.85)
UTG ($88.95)
MP ($42.90)
CO ($42.25)

Preflop: Hero is Button with K[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/diamond.gif[/img]. UTG posts a blind of $0.25.
MP calls $0.25, <font color="#CC3333">CO raises to $1.1</font>, <font color="#CC3333">Hero raises to $3.9</font>, <font color="#666666">3 folds</font>, CO calls $2.80.

Flop: ($8.40) 6[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
CO checks, <font color="#CC3333">Hero bets $8.4</font>, <font color="#CC3333">CO raises to $38.35 (All-In)</font>, Hero ?