Hi, Ms Rae here, I'm wanting to get a nice little flock of good dual purpose chickens. I think if I start them pretty soon, they'll be ready to start laying next spring. Right? (The cockerels of course will be consumed. One rooster would be saved for breeding.) My question is: Is it better to have just one breed, or to mix them up? I like the idea of using the Heritage Breeds, but am more interested in providing for my very large family. Thanks for your help!