Hi guys, I have 12 chickens (1 Serama rooster, 10 hens), and even though the food I buy is decently healthy and cheap, I would like to make a whole grain feed that could be cheaper. The feed I buy is 40lbs for $15. This recipe would make approx 110 lbs. 6 of our hens are 6 yo, 1 is 7 yo ( she is...