I know this topic has been beat to death, but my husband is the one building/designing new coop. I currently have 7 LF of various breeds. I wanted to add some white egg layers and added 5 Hamburgs of various colours. If the new coop is 8' X 4' with a 20' X 20' run, will this be of sufficient size for the chickens I have? I will still have my smaller coop/tractor which is 4' X 4' with a 10' X 4' attached run. I will move the Hamburgs into this as soon as they outgrow the brooder. Fencing for the new run will be 6' and covered by poultry netting. Thanks in advance for the info.