Love it or hate it =)

[murmeltier21]

Hey guys!
I have some history with villain and i know he is a pretty big nit. I assume he has a tag image of me.
I think the only way i could win this pot is repping the A on the river. If i did have the ace i would probably shove bc i only have like a psb behind. Regarding his line, do you guys think a shove here is ok?
Love it or hate it guys.

Party Poker
No Limit Hold'em Cash Game
$0.25/$0.50 Blinds
6 Players - (http://www.legopoker.com/hh)

SB: $54.62
BB: $42.28
UTG: $62.51
MP: $53.48
Hero (CO): $48.50
BTN: $72.01

Preflop: Hero is dealt 4c 5c (6 Players)
UTG folds, MP raises to $2.00, Hero raises to $6.00, 3 folds, MP calls $4.00

Flop: ($12.75) Kd Ad Kc (2 Players)
MP checks, Hero bets $9.00, MP calls $9.00

Turn: ($30.75) 7c (2 Players)
MP checks, Hero checks

River: ($30.75) Ah (2 Players)
MP checks, Hero bets all-in for $33.50, MP folds

Pot Size: $64.25