I am going to get three standard-sized chicks. I have a whole coop/run planned in my head - but before I build it I need to check with you guys! Does this sound good: 4 by 3 ft. hen house- 4 square feet per bird. 4 by 4.5 ft. run- 6 square feet per bird. Also, how much space should each chicken have on a perch? And how big should nest-boxes be? I read that they should be as big as a shoebox, but isn't that kinda small for a big ol' hen?? Sorry for all the questions. Can't wait to start building! Thanks!