If I were a provider of food, housing, energy or medical care I would want to be paid.
Gold and Silver would be acceptable, because they have the attributes of money. Mere currency and barter might become plausible alternative forms of payment, but would carry frictional costs which would tend to up the price.
E.g. A doctor wouldn’t want to be paid in beets or baby-clothes, and he would look askance at a rapidly-depreciating sheaf of Ben Bernanke Clown-Bux. But in 2014 a single oz of Silver will definitely get his attention.
Good plan, until you meet someone who needs what you have, can't pay for it, but has a gun.
If the SHTF in a major way, the population of any urban area will go feral as quickly as after missing ones days food. Once it starts, it will snowball rapidly. No matter how far from urban areas you live, you will be found. The further out you live, the more resourceful and skilled will be the hunters. Darwin and all.