I was thinking about keeping a combination of Sussex, Wyandottes, Orpingtons, and Wellsummers. I would only be keeping them for meat and eggs. But, I hope to replace them without ordering more chicks from hatcheries. I was also planning to house them all together. I was wondering if there were any specific disadvantages of keeping this combination of breeds. I was also wondering if there would be any breeding disadvantages because they would most likely be cross-breeding. Thank you. I would appreciate any advice.