I like this thread as I probably spend too much time speculating on what to do when things go pear-shaped. I've got a spare bedroom for a pantry, load up on stuff when it's on sale and date it so you can rotate it. #10 cans of stuff from the restaurant supply places keep and stack well, paper goods keep indefinitely. To get an idea of how long things will last, mark the date that you open something so when it runs out you'll know, like a 3 pound can of coffee lasts 41 days, you can get a mean average of how much to have on hand.
It's difficult to say what the most likely threat will be; a CME is a certainty somewhere down the line, an airburst nuke from Iran is probably around 85% within the next seven years. That will knock out the power grid, and it will not be restored for years, as there are no spares for a lot of substation critical components, and sourcing them will be difficult without manufacturing capabilities.
The biggest problem I'd face is being alone here. As mentioned earlier, you can't keep watch 24/7 and defend all points, plus forage. With a good group you can defend against the inevitable invaders that will fan outwards once their gibs-me-dat cards don't work anymore.
If there was a nuclear exchange, then all bets are off, depending on how close it is. I just watched an excellent movie from the 80's called
Threads, about a strike in England, it paints a pretty bleak picture a good ten years afterward.
