Well I think that credit cards will not work by then since the government will know before us. Cash is king for the first 24 to 48 hours so make sure you have some.
MountainBiker, Yes use the electric company till they turn everything off because the dollar is worth zero to them. Save the gas and use the wood since you can find more wood but you will not find gas and gas can be used for other things like cooking.
Whirlibird your list is right on, if no credit card then use cash because all things on your list will be worth a lot. Deer sound very good to me.
If the credit cards work than use them first.