Alix is right, radar is going up all over the place. I'm tempted to say, cut down on the amount of beer you plan on hauling around.
Get some really good vitamins, some fiber capsules, and grab some of the protein shake powders. You can melt snow for water to mix them up in reusable cups - no cooking, no dishes, no prep work.
There is no way that you can take the ingredients you listed and make them into some kind of homogenized mess and expect it to taste good. Well I guess you could - but your friends are liable to revolt.
On the other hand you could make soups, stews, mac & cheese, spaghetti & meatballs, etc and freeze them in vacuum sealed bags in individual portions. You could divide frozen veg into individual packages the same way. Same thing with some other precooked meat - sausages, ham slices, or whatever. Make some fruit cobblers and do the same thing. Freeze it all, stuff it in a cooler on the sled. If keeping things frozen isn't a problem - there ya go. Instant oatmeal, cream of wheat, etc. don't weigh much - neither does dried milk, or trail mix. You can get, or make, small packets of salt & pepper and other seasonings. A bottle of tabasco doesn't weigh much either.
When this many people come together to try to help some ungrateful twerp who only wants to be told how to make sludge taste good we're liable to get a little testy. (oh, and by the way it's not the FDA that does the nutritional recommendations - get your facts right!) (At least they didn't when I studied clinical nutrition)