PLO8 $25 with deep stacks - who is getting quartered?

[Fiasco]

What do people think I should do on the turn and river? Villain is pretty aggressive and may overvalue his hands a little bit. My PTO is having troubles, so no numbers.

Am I being a coward for not putting the rest (admittedly, not that much more) in on the river?


Poker Room skin
Pot Limit Omaha Ring game
Blinds: $0.25/$0.25
9 players
Converter

Stack sizes:
UTG: $24.75
UTG+1: $68.20
MP1: $1.65
MP2: $182.90
Fiasco: $172.95
CO: $15.35
Button: $19.35
SB: $16.65
BB: $9.75

Pre-flop: (9 players) Fiasco is MP3 with 4 [img]/images/graemlins/diamond.gif[/img] 3 [img]/images/graemlins/spade.gif[/img] A [img]/images/graemlins/spade.gif[/img] Q [img]/images/graemlins/heart.gif[/img]
UTG folds, UTG+1 calls, MP1 calls, MP2 calls, Fiasco calls, 2 folds, SB checks, BB checks.

Flop: 4[img]/images/graemlins/club.gif[/img] 4[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/club.gif[/img] ($1.5, 6 players)
SB checks, BB checks, UTG+1 checks, MP1 checks, MP2 checks, <font color="#cc0000">Fiasco bets $1.5</font>, 2 folds, UTG+1 calls, 2 folds.

Turn: 2[img]/images/graemlins/club.gif[/img] ($4.5, 2 players)
UTG+1 checks, <font color="#cc0000">Fiasco bets $4.5</font>, <font color="#cc0000">UTG+1 raises to $18</font>, Fiasco calls.

River: 6[img]/images/graemlins/heart.gif[/img] ($40.5, 2 players)
<font color="#cc0000">UTG+1 bets $40.5</font>, Fiasco calls.

Results:
Final pot: $121.5
<font color="#ffffff">UTG+1 shows 7C 3D AD KS </font>
<font color="#ffffff">Fiasco shows 4D 3S AS QH </font>