40-80 45s

[3rdCheckRaise]

Live 40-80 game. I am raising one horrible limper with 4 [img]/images/graemlins/spade.gif[/img]5 [img]/images/graemlins/spade.gif[/img] on CO. Limper is a prized call-call-fold fish. So far button was folding everytime i raised but all of a sudden decided to call, blinds call limper calls and we go 5 handed to the flop.
Flop 5 [img]/images/graemlins/heart.gif[/img] 9[img]/images/graemlins/heart.gif[/img]9 [img]/images/graemlins/spade.gif[/img]Check to me and i bet , button raised all fold and i call.
Turn K [img]/images/graemlins/spade.gif[/img] I bet , button calls.
River is A [img]/images/graemlins/diamond.gif[/img] and i bet
...is it all worth it? All streets are in question.