Dried potato flakes (instant potatoes) are an excellent source of nutrients, they're cheap, cook fast, and they store forever.

Speaking of cooking fast, a couple of things in that list take forever to cook, especially beans but also the rice. And anything that needs to be cooked will need fuel.

Whole-wheat –Crackers

That one doesn't make a lot of sense to me. If you want fiber get a big jar of metamucil, it doesn't have a shelf life.