I know it cannot be too hard to set up solar and wind ... cuz I done went and did it once ... so theoretically at least, it should not be too challenging. For hot water, I used flat black paint on carbon-fiber 55 gallon drums ... and generally had to mix the "cold" water from the silver tanks to shower. As for the solar and wind, we just had a bank of batteries on the side of the house much the same as it was on the rig I drove. The only thing we ever used an inverter for was when I ran my desktop or when my dad would turn on the weather reports on the television. I can send you all sorts of plans if you want, again, not because I necessarily believe in the whole survivalist scenario (though there does seem to be increasing merit to some aspects of their arguments) but because I really do enjoy the freedom of living out and away from everything.
I do not know if they are still available, but my Dad and I used to buy the 98 Mausers from Big 5 for about 90 bucks each and we would convert those to 7MM, 6MM mag, 30-06 and other sizes. We probably had a couple of hundred long rifles when we lost the land. I do not know about the survivalists, but investing in Precious Metals ((Shooting) Iron, Steel (Barrels), Lead (bullets) and Copper (jackets)) is never a bad idea. It is also a great way to spend some time tinkering when you have down time, can be a family thing if your family is so inclined and it makes a pretty good retirement investment as well. Anytime you can invest a couple of hundred in and pull three to five hundred out it is a good thing. If it did come down to survival, you can not eat gold but you can eat real well for the price of a bullet, and defend yourself and your family if it becomes necessary.