While I understand the concept, I think it is unrealistic. The only way to enable a small group of militia men to wage war agains the US government itself would be to arm them with all the high end toys that the military has at its disposal.
So that means there are many groups of people with cruise missiles, lots of high explosives, and (why not) nukes and other things.
We've tried that approach in Europe. Lots of independent armies, armed to the teeth, so that noone would invade the others. Guess what: It didn't work.