You are going to feed, house, and manage them differently than other people. You'll have a different climate and start with different stock. Your results are not going to match other people's results perfectly. You seem to have a really good idea of what you want or don't want, really fixated on breast meat for example. You have experience with chickens just not raising chickens for meat. You seem to have a lot of facilities and will make the time to manage them. I'm not sure how willing you are to experiment. I personally doubt there is that much if any noticeable difference in the meat you get from the Reds or Rudds in the way you grow them but get some of each and see for yourself. There could be a difference. It is possible one gives more breast meat as compared to the other.
Something I don't remember being mentioned. Not all birds of a breed are anywhere close to the same. The flocks can be of the same breed but what traits and size they have depends a lot on the person that selects which chickens get to breed. Some breeders might breed for meat, some for eggs, some for show, or some for other things. You probably know that since you breed for feathers but that's what I mean by different stock.
I think the most efficient way for you to put the meat in the freezer is to buy Cornish X chicks and raise them. With your facilities, freezer space, and willingness to butcher a lot at a time you could handle that better than a lot of people. But you want to hatch them from your own eggs. I totally get that, I do too.
No plan, no matter how well thought out, will work exactly as you think it will. And your preferences for the meat are different than other people. But you need to come up with a plan and see how it works for you. Believe your eyes more than what a stranger over the internet like me tells you. I can come up with a few plans.
Get some Rangers, whichever ones you decide on. Find out how hard they are for you to raise. See how they meet your meat requirements. Hold some back to breed. They are hybrids so you will get some pretty divergent results when you breed hybrids. As a general rule, eat the ones you don't want to eat and breed the ones you'd prefer to eat. In a surprisingly few generations you will greatly improve the quality of your stock.
At the same time get some true Cornish, not the Cornish X. See how they suit you as a breed. But hold the better boys back and use them to breed over some of the Ranger hens for your first breeding season. See how that compares to the Ranger over Ranger cross. Again, they are hybrids but selective breeding can correct a lot.
As an alternative or if the Rangers just won't work for you, with your desire for breast meat I'd consider the Cornish crossed with a top quality dual purpose hen. Dual purpose hens probably will lay more eggs for you to hatch than the Cornish. Some of the members of this forum know some outstanding breeders of New Hampshire, Delaware, and maybe White Rocks. They may know of other breeds. They won't be cheap, you pay for outstanding stock, but it makes a world of difference in what you get.
Good luck on however you decide and please let us know the results.