Lot of good advice here. My 2 cents too...
Again and again, water is your big concern. My base home, has many sources for it to last for quite some time and for base I hold a lot of high-shelf life foods, and a lot of canned foods. Food could last a long time. Meat items can be stored, and even gotten if environs allow. Still, clean water will always be the problem.
Now if I were to have to find myself moving, I can lean on my hiking gear (or BOB?) pretty well, which has a serious stove (smokless and strong BTU) that is lightweight and fuel (which can actually be various sources). Also first aid, cooking wear, sleep gear, small tent, water filtration (ceramic .2 micron +virus stop), knife, tools. Now again the issue is water - I like the bladder systems you can find since they are flexible in space and when used basically fold to very low form. It's not difficult to stash 6 liters of water on you with it all. An empty flask/bottle sucks to stuff. I can easily mix some gatorade in a nalgene bottle, and get more bang for the buck.
Be sure you have packed this stuff and tried it out. It's not light when you add it all up. That's why food sources need to be light (since water isn't) since you do want to be able to walk some distance, right? Also you might want to be able to run a little as quietly as possible right? You are going to also want to carry a rifle and small arm, plus ammo - right?
So right now I am only into carrying high calorie freeze dried, dried carbs like noodles, power-bar type, and MRE. Canned foods, and anything heavy that has a lot of water in it already is redundant and weighs a lot. Most freeze dried stuff requires little water, and since I also carry a chem heat pack, I don't necessarily have to turn up a fire either.