This is me just fantasizing about my future when I get my farm and large flock of chickens. Ahhh one day. Anyway, say I had a flock of about 100 hens with about 5-10 roosters. Would it be okay to keep the pullets from the chicks they hatch and add them to the flock, and hatch out their chicks and keep those pullets and so on so on.... Most likely some of the pullets would end up mating with their fathers again, so would the babies be all deformed/weak etc.. or is it okay for them to sometimes mate with their relatives? Thanks !