AQ on 532 is way way different than 875 or whatever ... this flop really sucks to c-bet players you have been battling IMO. unless he is the type of player to just lay down to u i think c-betting it is bad in general ... of course unless you plan on 3barrelling cuz thats what it's usually gonna take to get him off whatever he's flatting with.

problem is, does he think u c-bet after 3betting too much? meaning can he think you're holding an ace? cuz like after the ace falls, if he believes your c-bet was credible (which probably isnt the case unless he's the type to peel frequently), it means he has to think you're merging w/ a med-decent sized pr. do u have the history for him to think u will do this to get him to fold out like 99/TT on the flop? if so then merging vs him is bad in this spot and bluffing is kinda spew.

i guess it just really depends on the credibility he gives your c-bet after 3betting, cuz obv he could have been floating w/ A high and have paired the ace, right? though definitely it's a much bigger part of your range, but i agree w/ pocketfours that balancing your triple barrel range w/ a marginal made hand is much better than doing it w/ zero equity and only the hope of folding him out.

fwiw, i think bet sizing is right on. just answer depends too much on dynamics, im sure u knew that though.