[kabouter]

Just 4bet him pf, I make 3bets with hands like T8s, 77, basically any hand that is likely to give me the absolute nuts when I hit the flop against nits. 4betting will make him fold, if he does something like that. Or you call for set value and set value only, and that is probably the worst option since it's not +ev. I guess his big 3bet is most likely AKs, AA/KK, and depending on how often he 3bets I have no problem laying this down.

This hand is hard, you can reraise him allin, but you will get called by aces/kings, maybe jacks. you can call and see if he fires again, or fire yourself at the turn.