villain is a TAG good reg with a ~50% opening range from the BTN.

very standard by now.

he decides to b/x/b.
it doesn't look bluffy, it's hard for him to have pure air OTT 'cause I can't see many hands without even a gutter - which he would keep barrelling almost always. his giveups look like Axs Kxs Qxs with non-heart backdoors.
with so many hands he would keep bluffing OTT i expect him to barrell almost all of his Jx, maybe checking some of the worst for the sake of protection; I also expect him to valuebet his very best nines (Q+ kicker?) most of the time and of course to bet all of his naked draws with no showdown value.

on the Ah my hand could be a decent bluffcatcher with this pot odds, but i thought - and I still think - it works better as a bluff: I'm plenty of hands I'd checkraise for value, he's capped on rivered 2pair except for some 9x flushes and he's not gonna have a ton of bluffs, I block some of his very few strong and strong-ish combos.

playing lot of table I didnt pay a lot of attenction to the size and that's what I regret.
he would call anyway for sure with his specific holding but it doesnt matter... I think 60~65$ would be ideal, or maybe even bigger? or is it ok?

sizing-skill is where I should work out, so let me know what you think about that.
I apologize for my bad english, eventually :D thank you guys.