Either way, ensure you have enough weapons (basic firearms, plus reserve such as Cross/long bows, swords, knives, machetes, spears), water, dried and conserved foods, ex. mil. clothing, a couple of respirators plus reserve canisters, recharge batteries with solar re-charger, a wind up recharge torch and radio, enough containers to keep food and water in (Air sealable if Pos.), a water purifying system, and tablets as a reserve, fuel, calor gas, benzine and diesel(Only hold out a year maybe two, due to chemical problems), and nylon or steel twine for snares. Everything else you can get. If you can, get coca leaves or the plants themselves (Natural pain killer), tree moss (Natural peneciline), and a few rabbits or hares (They breed quick), sheep or goats for milk and cheese (Forget bovine, cost too much to feed).
Nylon fishing line and hooks, plus even those plastic baits,flint and a steel to strike (Survival knife) with some dry stuff (Lots) to start the fire. Bee´s if you can find some and protect them (Honey=Sugar=Energy).Seeds and seeding earth, plus a bag or twenty of mushrooms (They grow quick, and can give you vitamins and iron too), and charcoal (In case you get the runs), plus night sights, sun glasses, and anything else you care to take with you LOL
But, I´m not a survivalist, just ex. Mil.
By the way, eart insects, they´re full of vitamins and iron too, as are earthworms. Use maggots to clean out septic worms, and keep Iodine in case of Nuclear attack (It keeps you from absorbing RADIATION, teaspoon a day in half a pint of water)