Sounds like a college student undergoing rigorous medical testing for beer money, but without the beer money
I'm a big supporter of MREs. Lots of calories and nutrition in a single meal, easy to make and some actually taste good. The only drawback with them is the high volume of plastic trash. You can take snack food with you too you know, tasty cakes, boxes of little debbies, cookies, all those things have a decent shelf life and are loaded with sugar (stops the shakes from low blood sugar). Unless you plan on being a minimalist, pack some goodies. Junk food can be purchased almost anywhere in the world, even if it is just little hard candies.
Someone out there thinks you can eat been sprouts for 1000 days, and you might be able to, but I wouldn't recommend it.