If you’re interested in making your own food or dehydrating it, I suggest looking at http://www.dogaware.com/articles/newsdiet.html#recipestudy. It’s an article about the research and nutrient deficiencies in homemade diets, and links to where you can get supplementation.
I also agree with Akari in that feeding a purely raw (especially PMR) is easy if your calculations are correct. The very basic rule of thumb with dogs is 80% muscle meat, 10% bone, and 10% organs, with 5% of that being liver, and the other 5% being another secreting organ, such as kidneys or pancreas.
