Looks fine. I also prefer the X/R-line due to the fact that Villain can B/F hands with decent Equity vs us (89s/JTs/...) that would have folded vs CB but tend to bet here often.
And its protecting your checkingrange in general. I would balance this up with KK/AA frequently

It's hard for you to be much worse than 50/50 here equity wise and you are kind of indifferent to what he does with his worse flush draws here. Getting him to fold stuff like QJss, JTss, KTss, etc. and avoiding turns that give him a pair to go along with FD is a good result as is getting him to pay off with them vs the jam.

Perfectly fine hand, you could Do this with overpairs aswell. Espeically when he stabs big. Otherwise i would use smaller xr and just jam turns.

”I decided to xr as i would often giveup on this type of boards”

This board is Pretty good for you tbh. 2-3 is very brick cards and the 7 is not super relevant. He Will have 78s and 77. But thats not enough to make you start checking alot. A much worse board would be more middling cards and potential straights. Like 78T, 89T, you Will need to check much more on.

Cbetting something around 70-80% Will be fine here depending on your sizings