Some of this depends on which birds you choose, Cornish X, Rangers, or dual purpose. This can affect housing and feeding and even what age you butcher which affects how you cook them. Lots of nuances, not necessarily a cleat yes-no type answer.
I only grow and process dual purpose. I've never tried the Cornish X or Rangers. I hatch my own and raise them just like the ones I keep to lay eggs. I eat pullets as well as cockerels. Mine are based on hatchery birds, not birds from breeders. Lots of nuances there. And a lot based on personal preferences.
Many people on this forum try raising Cornish X with their regular chicks the first time they raise them. From what I read on here most don't do that the second time they raise the Cornish X. I have not read that so much about the Rangers. A couple of things drive that. CX chicks pretty much eat, poop, eat, poop, drink, eat, poop. They poop a lot and make a mess. They also grow really fast so they may block the regular chicks from the food. Again there are nuances with that. Some people get the CX to forage a fair amount on pasture. Others fail at that. They use various techniques. There are threads on her about some of those. One is restricting feed to sort of force them to go forage but that can slow their growth.
I raise my dual purpose cockerels with the rest of the flock and feed them the same, which includes them foraging. Some people house the cockerels separately and feed them a higher protein diet.
If you hatch your own, what will you do with the pullets? Some people sell them, I eat mine. How important is size to you? There are only two of us and I can get two meals out of a fairly small pullet. I like larger cockerels and breed mine with that in mind, but the only practical difference to me is that I get chicken for lunch when I butcher a cockerel. For others size is extremely important. Again, personal preference.
How much freezer space do you have? With my orchard and garden it can get pretty precious around here. With Cornish X you pretty much have to butcher them when they are ready. If you wait too long they often start to die because they grow so fast. With my dual purpose I can butcher when I want, within some limits.
How do you feed them? If you buy all they eat then you want them to be efficient in converting feed to meat. You cannot beat CX for that. Mine forage a lot so I'm not under that pressure to get them butchered.
My general suggestion is to pick one, gather information on that method, then try it. See how it goes. If you are OK with it, great. If not try another method. Find what suits you best.
Good luck!