When brooding... you can keep them in anyplace that will not drive you or your wife out due to the stink that will be generated for 2-3 weeks. You will need a heat and/or light source as well as shelter from drafts for that period of time. ( check with the hatchery). So, you have the fox... one of the most intelligent predators out there. When you have fox, more likely than not you have racoons, etc as well. This nececitates as many redundant features as you think will be as predator proof as possible, top, sides, bottom. Use as heavy guage 1/2" x 1/2" hardware fabric as you can buy as that will be the cheapest insurance that you can get. Meat birds usually just lay on the ground to sleep, so you may or may not have a need for roosting boards. I would provide a seperate shelter for shade, wind, rain from the layer flock as the meat birds require different management for feed ( 22% protein start to finish). The meat birds have much different feed nutrient requirements from the egg layers... they make meat, while the layers make eggs. Feeding the egg layers the higher protein will only waste the calories as they will just store it in the form of extra fat. You can free range the meaties along with the layers, but think of the work in seperating the 2 groups every night. Free ranging for them eating green grass and chasing bugs sound nice, but in practicallity the meaties will run off most of the calories gained from those sources . The only real advantage would be in a slight difference in taste in their fat. May I ask your preference for the freedom rangers? If it is for the feather color, well one can't eat feathers. They will have to be fed for at least 12 -14 weeks to yield a similar weight carcass as the CornishX in 6-8 weeks. Both will still eat the same amount of feed but there is a 4-5 week's difference worth of labor . This gives you more time to spend with your wife and family. What breed of layer do you have? My choice would be to use the Leghorn... the most efficient bird in converting the most eggs while eating less feed per year of any chicken breed out there. Equates to more $$$ saved for the same work. Good luck, and have FUN !!!