$50NL 6max How do you play this hand?

[Speedlimits]

<font color="blue"> Villian is 40/2/.3 over 132 hands</font>

Poker Stars - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $121.15
BB: $49.75
UTG: $63.15
<font color="black">Hero (MP): $50.00</font>
CO: $50.60
BTN: $59.40

<font color="black">Preflop:</font> Hero is dealt 7[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/diamond.gif[/img] (6 Players)
UTG calls $0.50, <font color="red">Hero raises to $2.50</font>, CO calls $2.50, BTN calls $2.50, 2 folds, UTG calls $2.00

<font color="blue"> PF is really marginal but the UTG limper made me want to raise it up, a fold is fine here too.</font>

<font color="black">Flop:</font> ($10.75) 9[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/heart.gif[/img] 2[img]/images/graemlins/diamond.gif[/img] (4 Players)
UTG checks, <font color="red">Hero bets $8.50</font>, 2 folds, UTG calls $8.50

<font color="black">Turn:</font> ($27.75) 5[img]/images/graemlins/spade.gif[/img] (2 Players)
UTG checks, Hero checks

<font color="blue"> Anyone like a bet here?</font>

<font color="black">River:</font> ($27.75) 7[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">UTG bets $4.00</font>, <font color="red">Hero ?

<font color="blue"> I have two options here, call or raise. If I raise how much, shove maybe?</font>