Phil, that's not just a "boondocking list", it's a "prepping for the apocalypse" list -- wow! Very impressive.
But my advice to the OP is not to wait till you have crossed off every item on that list before you try boondocking for the first time. Be prudent, but just do it. I notice that you have young children. They will never forget the adventure of boondocking.
And then when you get hooked on it, like many of us are, then you can learn how to install your spare serpentine belt. (Full disclosure -- I have decided to forego this particular pleasure. But I do know how to change a tire on my truck. Does that count as prepping??) ;)
By the way, here is a link to a blog post in which I have collected photos of our trailer in a number of different boondocking sites -- it'll give you some idea of the peace and quiet we are always hoping to find:
Boondocking photos