I just finished my coop and it is 10' x 5' with 6' walls. On one wall I built 3 rows of 4 nest in each row. They start 30" from the floor and go almost to the ceiling. The other wall has a 4 level perch, in which my 4 hens have enjoyed for months. It starts on the floor and rises up to around 3' tall. My hens just started laying this past week, and have been housed in a 10' dog run with their perch prior to building their coop. I live in the southern part of Texas, so we have not had any extensive cold weather this year. So far 6 eggs. They have just dug little impressions in the ground and layed their eggs without a nesting box. I have filled each box with pine shavings and hope they will figure out what they are and how to use them. Most of my eggs have been found later in the day. After I check on the birds in the morning, I have no eggs. Check on them at lunch time and they have layed. I am assuming they will still use their perch at night and go to the nesting boxes only when needed, right? I still need to add hardie plank to the outside, but the girls moved in today. the backside has a 11' x 15' door that open up to their dog run. I am planning on building out a 10' x16' run later. Did I over do it for my 4 hens? I am planning on getting some more this spring. How many will this setup hold comfortably?