I have egg layers (8 birds), meat birds (10), Ducks pets/eggs (2). I want to mix a 55 gallon barrel of food. I live in the city and I have no clue where a mill is that can just sell me a mix so I'll be mixing it together myself. Mix: Cracked Corn, Wheat, Milo, Oats and Heat Treated Soybean, layer pellets, BOSS, crushed egg shells Does this sound like a good mix of food for them? Should I add anything else?