i think against a tight 3betting range you should 4bet because you might loose value against AK QQ KK when overcards come or AK doesent hit an A or K.
I also think you should not call them out of position unless you have a good reason to do so.
if villain seems to be very aggresive and barrels a lot postflop in 3bet pots then it might be better to call.
But in generel i think 4betting and calling 3bets has about the same EV but im not sure since i dont have a sample size that can support it.
i dont know what stakes you play i play nl25 where ballance should not be a concern.
but i think if the EV doesent matter you can just as well be ballanced.
so i think if you generally combat 3bets by calling then call them a lot and if you generally combat 3bets by 4betting then 4bet them a lot.
to me it makes me more comfortable knowing i have them in my 4betting range because then i can 4bet bluff more. But i do call them sometimes.