[NL100] Set vs 4 straight, what next ?

[Frelled]

Villain is unknown, he's only been at the table for about 10 hands. I'll have played very few of them, if any.

Party Poker
No Limit Holdem Ring game
Blinds: $0.50/$1
5 players
Converter

UTG : $150
Button : $100
Hero : $147

Pre-flop: (5 players) Hero is BB with 8[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/diamond.gif[/img]
<font color="#cc0000">UTG raises to $4</font>, CO folds, Button calls, SB folds, Hero calls.

Flop: 8[img]/images/graemlins/heart.gif[/img] 4[img]/images/graemlins/spade.gif[/img] 6[img]/images/graemlins/spade.gif[/img] ($12.5, 3 players)
Hero checks, UTG checks, <font color="#cc0000">Button bets $8</font>, <font color="#cc0000">Hero raises to $18</font>, UTG folds, Button calls.

Turn: 5[img]/images/graemlins/diamond.gif[/img] ($48.5, 2 players)
<font color="#cc0000">Hero bets $35</font>, Button calls.

River: 3[img]/images/graemlins/club.gif[/img] ($118.5, 2 players)
<font color="#666666"> Hero ??? </font>