AA, 4 straight board on the turn

[PoBoy321]

Interpoker $0.50/$1. I'm on the button with $138.50. Villain is SB with $149.30. He's been playing very loose and aggressive.

Preflop: One limper to me, I find A [img]/images/graemlins/spade.gif[/img]A [img]/images/graemlins/club.gif[/img] and make it $6, hoping that one of the blinds will put me on a steal and call with trash. Villain instacalls, BB and limper drop out.

Flop: 4 [img]/images/graemlins/heart.gif[/img]3 [img]/images/graemlins/diamond.gif[/img]5 [img]/images/graemlins/spade.gif[/img]

Villain checks, I bet $20 into a $14.00 pot (not sure why I overbet, but given villain's play, i expect him to call with a very VERY wide range of hands). Villain calls.

Turn: (4 [img]/images/graemlins/heart.gif[/img]3 [img]/images/graemlins/diamond.gif[/img]5 [img]/images/graemlins/spade.gif[/img]) 6 [img]/images/graemlins/club.gif[/img]

Villain open-pushes for $123.30 into a $51.50 pot.

I fold.

Given villain's image, i think i should have called, but at the same time, i think that this might be a situation where I can find a better time to bust a LAG.

Thoughts?