considering how deep you both are yes I think AK may be a bit light to stack off with, however he blocks AA and KK so not terrible.
however I think your play of 4bet jamming may be -EV. if your shocked he stacked off then that means that you expected villain to fold some of his best
hands, fold
equity is not what we desire pre flop with the best hand in hold em, villain will likely fold A10+ which is a total disaster.
why not 4bet to like 0.80 cents?
If you only 4bet jam with AA you are super easy to play against to an informed player.