You've already received such good advice. I have only one other thing that I would urge you to do. Take a stroll through a shelter, visit with some of those dogs briefly. Look into their faces. Look at their dark, concrete stalls with chain link gates. Look at them all alone, isolated for most of their time from people and the ability to play and touch other dogs. They're deprived of the basic need of social contact. I don't know how many there will be in one shelter, but multiply those numbers by millions. Realize that the vast majority of these dogs will suffer and languish in these shelters, alone, bewildered and unloved and then be given the needle which wastes their potential lives....what they could have had, had people who breed their dogs because they want a cute little puppy not created yet more dogs. Some of those sad souls could have been taken into someone's heart, home and life....someone like you or any of the people who you sell your puppies to.
If you cannot add something to improve the breed, something that no other breeder of champions or other proven dogs can do, you have no business breeding. It's on par with criminal.