I know this is probably standard for higher levels, but this guy is a nit with 0 3bet stat over 150 hands. I think he only stacks off with KK and AA here (maybe QQ but obviously I hold 2 of them). He probably calls with AK but I doubt he bluffs it when he misses (maybe I'm misranging people here?).

So how do I escape this? do I just fold/flat pre? if I call do I just fold do a bet? do I then commit on later streets? Flatting also leaves me vulnerable if an A comes, especially if the original raiser comes along. Friend keeps saying he's too short I just get stacked here, but this seems like a pretty significant advantage to shorter stacks, how do I punish that?

The major problem is that he has only 70 BB. So it's not really profitable to set mine here

Not sure why you 4bet if you know his range for 3 bet is only KK/AA..

You can cold call 3 bet and hope alek comes in as well and pray you hit a set, or just fold pre. Folding pre seems pretty nitty though.

His 3bet range is probably wider than KK and AA, my 4bet was pretty small so he probably continues with JJ and AK but I don't think he bluffs AK if he misses. Now obviously I could be ranging people totally wrong but it feels like I'm always beat here against this guy. Question is can I try and check it to showdown? do I call a turn shove? should I be bet/shoving flop or just shoving pre?

Basically my read is telling me to check/fold and his stack size is telling me to stack off. If I play tight with 70 big blinds can I get people to fold QQ to me? if so why aren't I playing 70 BB?