I have 2 RIRs, one buff orpington, one white Plymouth rock, and one australorp. The coop we are building is 4x4 feet with three nesting boxes attached off the main square. The coop square is 4 feet high with a 2 foot pitched roof on top of that. Their daytime run is 12x12x6 feet high. Is the coop big enough for my 5 girls? Should I put 2 or 3 roosting bars in the coop (4ft)? could I get away with adding 1 or 2 gold laced Wyandottes in this?