If you plan to do crops of meat chickens, it is easiest to bring in day old cornish cross chicks and just raise them. If you really want to do it yourself, though, get a bunch of Dark Cornish roosters and just let them roam the place. They will be your best terminal sire you can use, and you can use them on every shape and size of hen you have.
Another route to go would be to make your own egg laying hybrids. Use a Rhode Island Red rooster on Barred Rock hens which will give you Black Sex Links. They are awesome layers and very hearty animals. You will know the males as they hatch, due to the sex link gene. You then raise all the males for meat and keep the hens as replacement hens.
My BSL's are probably the meatiest birds on the place after the Freedom Rangers I held back. You will get far better performance out of doing hybrids than any purebreed by a good long distance.
Another route to go would be to make your own egg laying hybrids. Use a Rhode Island Red rooster on Barred Rock hens which will give you Black Sex Links. They are awesome layers and very hearty animals. You will know the males as they hatch, due to the sex link gene. You then raise all the males for meat and keep the hens as replacement hens.
My BSL's are probably the meatiest birds on the place after the Freedom Rangers I held back. You will get far better performance out of doing hybrids than any purebreed by a good long distance.