Totally lost vs. unpredictable player in home game

[sapsuckah]

Interesting hand from a home game last night where I had tough (for me, at least) decisions on every street post-flop. I'll post it in stages. Comments on all streets welcome, of course.

Two-tables of seven each, first level (10/20). Hero's already down to about t1600 after some good early starting hands turned to dogmeat on bad flops + aggressive opponents.

Villain is experienced but not very serious, more tricky/trappy than skilled, relatively loose and very unpredictable in terms of starting hands. Pretty typical mid-20s home game LAG. He's got about t2300.

Preflop: Folds to villain on button, who calls 20. (He could just as easily have AA here as any two suited, any connector or gapper, A or K-rag, etc.) SB folds and I check with 74o. Pot is t40.

Flop: 4-8-T rainbow. Hero - ???