Congratulations on getting your new puppy. I have my first B who is now 14 months. We brought her, Dolce, home at 10 weeks, so I am by no means a B expert. However, I have had dogs my entire life. As long as your breeder is a reputable one and I assume he/she is, I would say he/she is your best teacher at this point. My breeder, Robyn Dubbert, has continued to be; even today. I would give two pieces of advice as you prepare to go get your new baby.
My first recommendation is to take a momma towel with you. That is a blanket, old t-shirt, or towel that you can rub on your B's mommy, siblings and other members of the pack. You can also toss it in their bed for a short time before you leave. Leave it with your B during the trip home and for several days after arriving home. The purpose is so your B continues to have the scent of his/her family providing comfort away from home. I have used this method on all of my new puppies and all have been well adjusted.
Second, when you arrive home walk your new B in her "potty" place until he/she goes. Give good praise. Then take her inside for the first time. I read this piece of advice and used it with my previous Dalmatian and with Dolce; it works. She rings the bells to go outside.
Good luck and enjoy. Having my first B has been awesome. I am amazed and enjoy every day with her. You will find the B's mannerisms are intriguing and unlike any other dog. Looking forward to hearing your stories.