So we are going to assume you have done plenty of research and you are now ready to move forward with breeding.
One Pair or at most One Set (1M 2F) is the maximum you should start with. You can think you are prepared for this, but getting overwhelmed is a sure fire way to lose money.
Common trap many fall into. Don't let someone convince you to buy a breeding dog from the wrong registry.
There are many reasons to check pedigrees, but one thing you must check is relations. Breeders travel for the best dogs. Littermates could be in 5 different states.
Whether you are starting your program or managing your program, you have to weigh these factors.
Before you buy your dogs, watch this video. Talks about dealing with breeds that have Patterns like dapple, harlequin, or merle.
There is more than one Aggressive Breed listed in the top 20 of AKC registrations. And there MUST be breeders for these important security breeds, but not everyone can raise them.
This discussion talks exclusively about adding Champion Show Dogs to your program. Does not include Hunting Titles. You will see that most hunting breeds strongly encourage a hunting title in every offspring. (Hunting Dogs are typically scored on ability, not compared to others. So it is more of a certification of ability.)