Temperament in kittens?

[Mamma Cat]

I am so sorry that you feel you need to go to a breeder to get a great cat. I foster many shelter cats and they are mongrels. They are the cutest, friendliest cats you could ever hope to get. I do a write up with everyone of my fosters to explain their personalities. Some want to be in your lap, some want to watch, some want to talk you head off.
Your cat/kitten will adjust his personality some to your interactions. But I would suggest that you inquire if the cat was fostered and what that input is.
Please, save an existing life and not support a breeder that would tell you that that breed is better.