Hi Riley, congratulations on taking a step towards getting Bresse chickens. This page might help you get started on having a breeding plan,
https://www.ambresse.com/the-process-of-selective-breeding.html. Now, may I suggest you be careful not to put the cart before the horse? I bred high-end German Shepherd Dogs for many years. There's a lot that goes into good breeding practices whether it's dogs or chickens. You need to be familiar with the lines, and have some understanding of genetics.
I'm looking for Bresse currently and considering breeding also, but I'm starting with educating myself on the breed - it's history, susceptibilities, strengths, and development. I wish you the best, and maybe we can stay in touch and trade notes.
Bonnie