I used my formulation program that I use with commercial livestock feeds.Hard wheat is a net benefit , red milo is a downgrade. And in the quantities you are looking at, the mil lshould be able to get the nutribooster for you. Baiscally, its vitamins, calcium, some other stuff, and added synthetic Aminos if desired (yes, you desire).
Fertrell's product, or something like it, is like the bottom 15-20 ingredients on many feed bags.
Follow the link above, look at the ingredients, then compare you a common commercial feed. You will see some similarities.
and trust Lazy J's numbers over mine, he's adjusted for moisture, and has more accurate tables than I do.