100NL, 77 on gross river

villain is 32/2.2/0.5 over 90 hands. How much should i bet on this nasty river? :cool:

PokerStars No-Limit Hold'em, $1.00 BB (9 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

UTG ($16.50)
UTG+1 ($97)
MP1 ($136.35)
MP2 ($17)
MP3 ($74.40)
Hero ($122.75)
Button ($107.45)
SB ($78.95)
BB ($86.90)

Preflop: Hero is CO with 7http://www.flopturnriver.com/phpBB2/...miles/club.gif, 7http://www.flopturnriver.com/phpBB2/...iles/heart.gif.
5 folds, Hero raises to $4, 2 folds, BB calls $3.

Flop: ($8.50) 5http://www.flopturnriver.com/phpBB2/...es/diamond.gif, 9http://www.flopturnriver.com/phpBB2/...iles/heart.gif, 4http://www.flopturnriver.com/phpBB2/...iles/spade.gif (2 players)
BB checks, Hero bets $5, BB calls $5.

Turn: ($18.50) 7http://www.flopturnriver.com/phpBB2/...iles/spade.gif (2 players)
BB checks, Hero bets $14, BB calls $14.

River: ($46.50) 3http://www.flopturnriver.com/phpBB2/...iles/spade.gif (2 players)
BB checks, Hero ?

i bet 20
when he go all in fold

35 or something there are a ton of worse hands that will call.