I suggest you make your meatie pen either moveable or easy to clean out, if your getting broiler/cornishX chickens, they poop a lot. Because they are geneticly modified to be table ready in 6 weeks, they eat a lot and therefore poop alot. I wouldn't build them roosts or nest boxes, they will be to heavy to use them. I usually use a covered chainlink dog kennel with chicken wire around the bottom for my meaties, I have BB turkeys growing out right now for thanksgiving. You should also move the feed and water on opposite sides of the pen, that way they are motivated to move, otherwise they will sit inbetween the two and just sit there and eat.
Not trying to push you away from them, just some helpful hints I've learned.
Also, if you dont plan on leaving them whole with the skin on, I peel off the skin with the feathers still on, kind of like a jacket. Then I fillet off the breast, pop the joint, and do the same with the legs. Its alot quicker, you dont have to pluck feathers or diig out the lungs and such.
