100NL: 76c steals and gets there...but too much action on river?

[SirFelixCat]

Villain seems loose preflop, but not a total monkey(39/13/1.75). The question, imo, in the hand, is what range do we put villain on, on the river, and what's our best line (raise or call). If it's raise, do we push? And if so, do we expect a worse to call?

TIA.

Full Tilt Poker - No Limit Hold'em Cash Game - $0.50/$1 Blinds - 6 Players - (LegoPoker Hand History Converter)

SB: $154.15
BB: $202.00
UTG: $191.60
MP: $102.50
Hero (CO): $164.55
BTN: $91.50

Preflop: Hero is dealt 5[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/club.gif[/img] (6 Players)
2 folds, <font color="red">Hero raises to $3.50</font>, 2 folds, BB calls $2.50

Flop: ($7.50) K[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/spade.gif[/img] (2 Players)
BB checks, <font color="red">Hero bets $6.00</font>, BB calls $6.00

Turn: ($19.50) 3[img]/images/graemlins/club.gif[/img] (2 Players)
BB checks, <font color="red">Hero bets $15.00</font>, BB calls $15.00

River: ($49.50) 8[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">BB bets $49.50</font>, Hero is not folding, but does he raise or call?