I'm pretty new to this and have couple questions regarding my coop/run size. We have 11 total chickens...7 of which will most likely not get much larger than say medium sized and 4 that are on the high side of medium. We just got the other 4 today...and two of our others are roosters so chances are one of them will go away leaving us with 10 total birds. THe 'house' has 19 square feet of floor space and it is always open to the run which is 48 square feet. From what little reading I've done I see where you need anywhere from 4-8 square feet per bird. I want them to be comfortable and plan to add on to the side of the current run and make the run total 80 square feet and of course the house will remain at 19. Does this sound right? So about 99 square feet total for 10 birds.