Honest questions follow, please read with an open mind. The GSD is the #2 most popular breed out there in the US and probably the most popular worldwide. Probably half of those dogs do not meet the standard for the GSD. I'm not talking nitpicky details, more like fearful, no aggression, all the wrong aggression, poor health, weak nerves, some are disasters and some decent enough pets and some are management cases. A lot of them come from litters where someone's goal is just one or two litters. A lot come from puppy mills. Some come from breeders who only consider physical appearance or sport ability and dang all the rest. Many posts on this forum are dedicated to cleaning up the messes in the breed. What to do with DM, hip dysplasia, allergies, SIBO, etc? How to socialize? My dog is aggressive, help? My dog is scared of everything, help?
Someone could have a really great dog, breed it to another really great dog, and due to lack of understanding of pedigrees, end up with nightmares that either need to be in expert homes or be euthanized. Or can end up with most of the litter affected with varying degrees of genetic hip dysplasia.
Having said all that? Why breed your female? This is to say nothing of the fact that she can die on the table during an emergency C-section because the vet missed a stuck pup and too much time passed. What does her pedigree have to offer the breed? What about herself- what has been done to confirm she is an excellent representative of the breed? What lines should she be matched with and what lines should be avoided? Are you set up to keep pups if they do not sell or are returned?
Coonhounds are probably easier- if they can run and tree and be good at it, they will likely make more good, sound treeing dogs (if it won't work, don't bother). GSDs have so many factors to think about- nerve, aggression, genetic obedience, clearheadedness, tracking ability, herding ability, defense, seriousness, prey, health, soundness, and then finally structure and appearance. These are all things to consider before jumping in and I do encourage you to start learning. This forum has excellent resources and people who are unbelievably knowledgeable about breeding GSDs.