Deep stack flop line

[jumbojacks]

Home game running 5 handed .25/.50NL. Effective stacks around $150. I've been playing selectively aggressive in certain spots and I've showed down some big bluffs. I haven't shown a big hand all night except for some thin calls and we're about 5 hours into the game at around 2 and the game is about to break.

I'd characterize villain as a bad postflop LAG and seems to hold onto overpairs too often postflop but can occasionally make big laydowns when he feels he's beat. He's a poor deep stack player, which is why I just called preflop.

I raise UTG 6[img]/images/graemlins/club.gif[/img]7[img]/images/graemlins/club.gif[/img] for $2, he 3bets me to $7 and I flat call here.

Pot: $14.75
Flop: 3[img]/images/graemlins/club.gif[/img]5[img]/images/graemlins/club.gif[/img]8[img]/images/graemlins/diamond.gif[/img].
I check. He bets $20. I raise $60. He thinks over a minute before he acts...

What do you do if he calls and the turn blanks? What about my check-raise size?