I am a chicken newbie. I bought 5 chicks and they are now 18 weeks old. I am terrible at math and have difficulty figuring out the whole"so many square feet per chicken" room rule. Mine are in a 10x10 modified dog run. They get flock raiser, grit, fruit, veggies, mealworms and greens. Will this be enough room for them or is it overcrowded? I don't want a game of chicken "Survivor" being played out! Also, just let me say that chickens are a ridiculous amount of fun and I am really enjoying BYC!