I have a few stray thoughts, not yet well organized - so what else is new?

- If your plan is to head out on foot, carrying large quantities of water can be a problem. Depending on the terrain you're going to be covering, it might be better to have enough water for a day or two and the means of filtering and purifying the water in the area. That goes out the window in a desert environment, obviously.

- Ditto the above with respect to fuel for heating/boiling water/cooking. Fuel takes up space and it has weight, whether it's wood, butane, alcohol, etc. If you're traveling through a typical wooded area, great. If it's prairie or hurricane-soaked wetlands, not so great.

- IMHO food is a little bit less of an issue. 3 or 4 days-worth per person should see you through to the point where you can get more. Even if it doesn't, you can keep moving for another few days with no food (unlike water). A week's worth of groceries is a fairly hefty load to carry, especially when you're in a hurry to get someplace else.

- If you need them, don't forget medications.

- You probably need an alternate shelter-in-place plan in case you are not mobile - injured, sick, or taking care of someone who is. If you are sheltering in place, I would say plan and provision for not less than 10 days of no utilities, no food or water from outside sources, no medical assistance, and no or limited communication with others. 14 would be better.