So by "sustainable," you mean you'd rely on foraging/hunting/fishing for food? Is that practical in your particular area in the best of times, let alone when "everyone" else gets the same idea and you're all using up the same food sources?

I don't see any food or water on your list except the one canteen. The plan is to bug out basically with no food or water at all then, right?

This is the Long Term forum, so could you paint a picture of the situation you're envisioning? Do you need to live off the land only long enough to reach a bug out location, or are you talking about living out in the bush for however long the situation calls for?