Way too many variables. I suggest you get a fairly small number and try it. See what works for you.
I eat one chicken a week and raise dual purpose. I process both male and female. I get at least two meals out of a fairly small pullet plus a lunch or two from a larger bird. There are only two of us. I also get some great chicken broth and cooked meat from the parts of the carcass I don't put on the table. With visits to grandkids and other things that happen, I need to hatch about 40 to 45 chicks a year. I learned that number by trial and error.
One of my issues is that I also raise a garden and freeze a lot of stuff. I quickly run out of freezer room. Right now I need to make jelly and jam from fruits and berries I have stored in there, soup from stuff I have frozen for that, spaghetti sauce from all the tomatoes in there, and who knows what else before I have room to process those six cockerels that are fast approaching the right age. It's also pretty full of cauliflower, broccoli, cabbage, carrots, black eyed peas, green peas, and greens. Some people pressure can their chicken but most freeze. How much room do you have?
You don't say if you are thinking of the Cornish X broilers, maybe the Rangers, or going with dual purpose. The broilers and rangers grow a lot faster but you pretty much need to butcher them when they are ready. With dual purpose you can butcher more when you are ready but you have to alter how you cook them because of age.
So try it and see how it works for you on a smaller scale so you can appreciate all that is involved before you over-commit yourself.