Not a fan of preflop. AJo is outside of my SB 3b vs MP range. AQo is where I draw the line.

As played, we have 90 to 110 combos that we "typically" 3b in this dynamic. Of those combos, approximately 40 +/- will be overpair+. Then we add in the suited broadways with BDFD's and we are getting up to 65 to 70 betting combos which are going be substantially more efficient than the offsuit stuff. I think AJo/AQo make it into my checking range on the flop here.

As played, I would just one and done and move on. We could maybe x/c a smallish bet on turn to shut down Ax from bluffing us off of a split. We have redraw equity vs some of the overpairs in his range 66-TT.

AJo is indeed pretty weak 3bet here oop. To put it into perspective AJo is mixed/0ev in SB vs CO open. Your 3bet size is also arguably on the lower end.

You're right that the flop is generally speaking going to favor you has villain shouldn't have any 4x/5x and you have the overcard and overpair advantage so betting often is going to be good. You can likely just bet a geometric sizing here for range (55-65%) as this is looking to be quite close to a pretty polarized situation.

For barreling turns/rivers ideally you would block his best combos of hands which in this instance is the more middling pocket pair region like 88-99-TT-JJ-QQ. You could also have clubs. The next best combos would be the fourth suit of the flop, in this case that would be heart combos. The idea being maybe he floats flop with some bdfd combos, but then folds them on turn, so unblocking those folding combos would be mainly XXhh.

In this situation after you barreled turn (which is kind of on the wider side). I'd likely cut my losses and x-f, but if you think he is folding those 88/99/TT/JJ combos at much frequency then exploitatively over bluffing will be profitable.