I'm also trying making a total food replacement this summer. Recommendation for people trying to make their own: start by buying just the macronutrients (oil / carbs / protein), and finding a blend you'll be okay with consuming. It's unlikely that the micronutrients will make it appreciably tastier, so if you can't find one you like without putting the micronutrients in it then you should abort. (The micronutrients represent a far more significant capital outlay, if you buy the ingredients separately rather than going with a multivitamin.)