I was wondering, possibly getting two more chicks, it will make 5 total for us, I have plans sketched out for a run that is 4'x8', coop 4'x3' with 1' access under the coop in the run. External nesting boxes. Do you think that it would be okay for 5 hens? I know the general rule of thumb that I've seen is 2-4 sq ft per chicken in the coop and 10 sq ft per chicken in the run. Thank you for the thoughts in advance!