I think this sounds easy enough. How many roosters do you have? And space is critical.I allow the breeders to return to the smaller coop for a week or two. Depending on if some are being bullied or being a bully. Then I close it up after turning them out to free range and have them go back into the main coop.
Such a fun hobby - so many ways to do it.Maybe it would work out to divide the flock. Maybe I'll need to rotate rooster breeds. Maybe I'll need to breed Blue Australorps and buy chicks of other breeds to keep some flock and egg color variety (should sell better than all one color). I'm collecting data now and will surely change my practices with experience.
I am playing with this idea - I have always had mutts, once of twice, I have played with pure breds, but like you always wanted a little more variety in my flock. So I completely understand.
Mrs K