Messed up the turn, now I need river sizing help (NL$200)

I just switched to stars due to the insane amount of shortstackers on full tilt, and am not completely used to the layout. The layout I am using has my stack size in the upper left of the screen so I am not used to checking it yet and did not notice we are deep.

Because of that I incorrectly assumed he would CRAI AQ on the flop usually, and if he did not he would CRAI on the turn regardless of my sizing. Once I got to the river I realized that wasn't the case and now think his range includes a lot more AQ, both with and without the diamond.

$1/$2 No Limit Holdem
PokerStars
6 Players
Hand Conversion Powered by weaktight.com

Stacks:
UTG chriskra2509 ($204.40)
UTG+1 kapie123 ($284.35)
CO nagoya2005 ($316.65)
BTN Hero ($268.90)
SB shipopotamus ($201)
BB Bidicha ($232)

Pre-Flop: ($3, 6 players) Hero is BTN 9 A
2 folds, nagoya2005 raises to $6, Hero raises to $19, 2 folds, nagoya2005 calls $13

Flop: 7 6 Q ($41, 2 players)
nagoya2005 checks, Hero bets $29, nagoya2005 calls $29

Turn: 2 ($99, 2 players)
nagoya2005 checks, Hero bets $48, nagoya2005 calls $48

River: J ($195, 2 players)
nagoya2005 checks, Hero?

We have 1 PSB effective.

Please also note one of the villains not involved in the hands has the name shipopotamus. Probably the best SN I've seen.

Proceed as you did so far, 1/2 PSB or even slightly less. He probably won't call PSB here as there are not many Ks in his range. I know you should try and maximize with a shove for the times he calls, but I think 1/2 is the way to go.

Also, I dislike your 3bet as I think it's too small even though you have position (my 3bets are the same OOP and IP and I like how it works out for me, so this might be just my preference, but I'd def go over $20 here) and I somewhat dislike your turn less then 1/2 PSB bet (although this might be borderline as the rake might be included in HH + you expected him to CRAI although I don't know why you assumed that).

turn bet is way too small given stack sizes (which I was unaware of) but I think it's either $48-$52 or jam on the turn if we are only 100bb deep

I kinda want people calling my 3-bets OOP or having to adjust their ranges and start 4-betting more hence the smaller than PSB 3-bet... if I were OOP it would be $22.

I think somewhere around 1/3 your stack to give the impression of CRAI fold equity is good, like $65 which I think he pays off fairly often with a medium diamond and might talk himself into calling with AQ no diamond to justify an "information call".

I do the same thing in pos. btw, my standard 3-bet size is 3x their pfr so 9BB if they open 3BB or 12BB if they open 4BB (but totally ignore this if value 3-betting donks).

Since you are deep his 3bet calling range is I assume more liberal. Therfore he can have probably any PP 88+, and AQ, KQ, even QJ with and without diamond.

In your place, I wolud probably bet every flush 10 and higher, but since 10 is rarely in your river range, you represent mostly Q, K and ace high flush or a bluff when betting.

So I think with K high flush he must call every betsize, and if your bet is lower (around half of a pot) you can bluff more frequently only aiming tu put off his non diamond combinations (but how often you have card that needs to bluff after he has checked thwe river?), but justify at the same time his Qd calls and maybe 10d calls.

Which betsize is overall better I dont have a clue. This question is so complex and needs some serious pokerstoving and thinking imo.