Since I called Ideal back today to order more pullets, I also added another roo; making my total order 21 pullets and 2 roos. Is that a good ratio? I want to avoid the roos fighting if at all possible. Also, about 'purebreds'. My hens and roos will all be brahmas, though not of the same color variety. So any future chicks would be brahmas, but not technically purebreds or am I just, as usual, confused?