2nd Barrel Air?

I think it's fine. I expect villain to be calling flop too wide and not raise enough on the turn at 2nl. funny thing is if he calls and river bricks, you can check and have showdown value

I don't hate it at all. Turn barrels are going to be basically FDs and anything that blocks the J. V will have a ridiculously weak range on a brick.

A good example of static boards favouring IP, allowing us to extend our bluff range into broadways. Sizing is good because they aren't folding Jx

The turn is great for you because villain is not realy improving much to hands that you dont have so you keep the nuted advantage and your AJ+ type hands are very happy to put in alot of money. Based on this it is a clear overbet spot here on the turn with your range so value want to go clearly for overbet so our bluffs the same.
Start thinking more about how turns and rivers affect ranges and what this means for your sizing / frequencys and combos that you want to keep barreling.
The combo that you choose makes a good bluff because it unblocks backdoorflushdraws like KT KQs ATs so unblocking this snapfolds in villains range is great.
Only better combos in your range would be hands that unblock folds and also block villains strongest hands here for example A2s with that hand you block AJ and you block turned 22 set.
So overbet better but combo good.