>>497044Addendum: these are not gonna give you the calories you need. They are for when you need a hot, filling meal or you'll be miserable. Take a shitload of homemade jerky for the calories.
Also I assusmed you were going by car. If not, dump out the contents of each packet into a ziplock bag, press the air out and seal it. Carry a reusable pot, dish and utensils.
Lastly, if you don't yet have a water filter, buy a Sawyer. They are cheap and do not require replacement filters. You just put water through in the opposite direction to flush out accumulated crud every couple months. Based on reversible blood filters developed for kindey dialysis machines IIRC.