If it interests you, and you are willing to let someone else do the hard work for you, I recommend you look into Justin Rhodes' make at home formula. It checks out well in a feed calculator, it compares favorably to off the shelf feeds, has enough "buffer" that a single below average feed...
I recommend you keep researching. Protein isn't your only concern in making a feed.
Your raw protein numbers, which are "generous" (Feedipedia.org puts your final numbers closer to 18.25%, before correcting for moisture content, which would lower it further), particularly if you are using...