One issue about breeding: There are breeders who have a pair or trio of a certain breed, and set themselves up for breeding, selling everything they produce.
Then, there are serious breeders, who buy quality stock, breed extensively, and cull extensively. Every season, they may produce 100 chicks, but only have 5 of those chicks which are worthy of keeping in the flock as future breeders to work towards the goal of improving the quality of birds.
IMO, it's important to decide what your goals are before you get too deep into the production of your birds.
Then, there are serious breeders, who buy quality stock, breed extensively, and cull extensively. Every season, they may produce 100 chicks, but only have 5 of those chicks which are worthy of keeping in the flock as future breeders to work towards the goal of improving the quality of birds.
IMO, it's important to decide what your goals are before you get too deep into the production of your birds.