Actually, the 2 roos to 10 hens being a definite "no" is something that I disagree with. It does depend on the personalities of the roos involved, however. I keep 2 roos to 10 hens, and with the amount of space they get (with plenty of hiding places), it usually works. If the two roos refuse...
I remember Zack saying that too. I have the luxury of being a backyard hobbyist, so I can give my birds more room instead of less if there are territory issues. Mine do quite well with 2-3 square feet per bird.
Sure, people who raise their birds just for meat/eggs and want pure efficiency will crowd their birds together like that. It works, but I don't think the birds are happy.
I started raising my own meat specifically because I don't want to support that kind of setup for the poor creatures. You...
Let's see, that's about 4 square feet total. Once you subtract the space taken up by feeders, waterers, and a dust/dirt bath, that leaves space for two. That will be a bit crowded, but you could fit them in there.