NL25 - River shove vs a horrible player

[reemas]

Opponent is 74/23/.5 over 225 hands. This guy will call down with Q high and bet mid pair. Doesn't make a move like below too often, although has been caught bluffing.

My question is what's the right play and is it worth it? (Against anyone else, I'd almost insta-fold here. But with stats like this and hands he's shown in the past, I wasn't sure). I'll post results later.

Full Tilt Poker - No Limit Hold'em Cash Game - $0.10/$0.25 Blinds - 6 Players - (LegoPoker Hand History Converter)

SB: $28.70
BB: $25.00
UTG: $25.25
MP: $33.45
Hero (CO): $47.45
BTN: $36.55

Preflop: Hero is dealt K[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/heart.gif[/img] (6 Players)
UTG folds, MP calls $0.25, <font color="red">Hero raises to $1.50</font>, 3 folds, MP calls $1.25

Flop: ($3.35) K[img]/images/graemlins/diamond.gif[/img] T[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/spade.gif[/img] (2 Players)
MP checks, <font color="red">Hero bets $2.20</font>, MP calls $2.20

Turn: ($7.75) 6[img]/images/graemlins/diamond.gif[/img] (2 Players)
MP checks, <font color="red">Hero bets $5.00</font>, MP calls $5.00

River: ($17.75) 9[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">MP bets all-in for $24.75</font>, Hero ???

[whyzze]

bet more on flop

bet more on turn

fold river

[mookboi]

[ QUOTE ]
bet more on flop

bet more on turn

fold river

[/ QUOTE ]

[reemas]

wouldnt that be grossly overbetting?