Betting flop seems ok as a protection play but not great. I don't expect him to X/F very often since this seems like a good spot to cB his air absent any dynamic between you two. As far as his marginal holdings are concerned I think most villains cB all low pocket pairs to protect, so I wouldn't be too worried about value cutting yourself against those, and you might even gain small amount of value from passively played Ax. That said I think a many players often exploitatively check high pocket pairs and Qx here to let you catch up or value cut yourself. I would therefore not be trying to barrel multiple streets without improving.

When you hit the ace I think I like going for two streets, but it seems like an easy fold to the river raise. I could easily be too optimistic here, particularly if villain is more standard and decides to cB most of his Ax suited and AJ on the flop. Also, I think I would size river more like 1/3 pot to try to get crying calls from Ax since you are repping a queen when you bet the river. I could also see betting turn smaller to try to get him to spaz raise turn for value the times he does have a Q if he fears you will often check behind the river. This lets you get away cheaper if my assumptions about villains flop range are correct since he can't really be raising the turn with air once his flop X/C eliminates most air hands.