I went from AFC , to a confident PUA in 1 year.

I know that eventually I will find a girl that I want to see exclusively. I will game her, and f-close. Eventually you start letting them in emotionally. But at some point I can't continue gaming her for a pickup , I have to accept it is a relationship and change my approach .

Soo basically , How do you approach a relationship from a PUA standpoint?
And do you guys see PUA as training, soo you can chose the best girl once you decide to settle down?

Relationship and gaming are two different things.
To be honest, I wouldn't rely on this forum for relationship advice. You're pretty much on your own.
And to the point where you talk about PUA being a training to get the best girl.
Well, the "best" girl is a meaning that is different for everyone. In my opinion, PUA is a way of life, of knowing yourself, through girls...
You gain confidence, you gain skills, techniques, tactics, routines etc... it helps on daily life, not just on pick up. Confidence comes from success, and a guy with confidence in life is simply more appealing to success.
If you're going to get a surgery done, you trust the doctor who is more confident, if you see a doctor that says " I don't know, maybe, it could be..." he lacks the confidence, so you go with the confident one.
Don't see PUA as a way to pick up girls, rather a way to know yourself deeply, and get to trust yourself to have confidence in your actions.