I'd start with what hands we can 3 barrel for value. Let's say AA KK QQ TT 44 AQ.
Then we can figure out how many combos this range has: 6+6+3+3+3+12=33.
So if we 3 barrel less than 33 combos on this board run-out, we are not over-bluffing. For example, you can go with AKhh, AJhh, all KJ, these are 18 combos. If you also put J9s in your bb 3betting range I guess you can add this to your 3 barrel range as well, which gets us 18+4=22.
If we do add AKo and AJo into this range, we get 22+15+15=52 combos, then we may be overbluffing OTR.

I´d triple barrel here very often. You say he folds too much otr so you can exploit that by bluffing more. Hard to put you on a draw as well.

Yeah against a good reg i should be balanced but i guess against his particular guy i should 3barrel all the hands that i bet turn with then right ?

Thanks for your answers !

Yeah against a good reg i should be balanced but i guess against his particular guy i should 3barrel all the hands that i bet turn with then right ?

Thanks for your answers !

since our bluffing range is pretty wide (AJ,AK,KJ) i'm pretty sure QK AQ KK+ and maybe QJ/JJ are 3barrels here

I would always 3 barell this combo since we don't block backdoor fds. This got to be like the best bluff combo we can have given what I said in last sentence and that you block KQ/QJ. How you structure your range OTR probably depends to some extent what you do with AJ/AK OTF. But we have a really nice hand to bluff so I would always bluff, if river isn't a bluff it's damn close for sure. However I still think it's a bluff. Set up stack sizes better btw

Agree with sweet16, this is about the best bluff combo you have and your flop/turn sizings are a bit too big.

I think when he calls pot on turn, henever folds rvr, so you saved yourself some €€.
Dont like the sizings all streets , would go 80-90 preflop, and around 100-120 otf. Turn ipdepends on his pre-flop tendencies. Since you have a lot of AJ, AK, J9, 89s, turn FDs , i dont like the pot bet on turn, hes never folding a Q, and against other hands you have decent equity. Against active floater, would ch/r turn
Otr we are overbluffing esp with these stacks

Yeah I have to admit that I don't really know how to set up my sizings. I'm always wondering if I should think GTO and so bet big when my range is strong and small when I have a lot of bluffs (Axx board for example). Or if I should consider more his range and his tendencies. But then here for example, I said the guy calls a lot flop and turn and fold a lot on the river. Would you bet big turn to make more money when he folds on the river or would you bet small cause he'll not fold many hands on this turn ?
I'm a bit confused.

You should think GTO when you dont have additional info or you play vs very well balnced opp, and play exploitative otherwise. Theres no sense play GTO if your opponent makes obvious mistakes AND YOU KNOW IT. So lets say against this guy bluff less with no equity and pick good spots to bluff rvrs
Here it might be ok to bluff all 3 if you have really good reads about his rvr play, but it should be big sample, good history, etc.
As i said in this spot, i would expect close to 0 FE otr after you pot turn in 3bet pot

You'r play is good.
Just make a 3nd barrel here vs a good reg.
You can have a good FE