The correct answer is that when the national committee passed a resolution about this matter, it endorsed the idea of 5 members.

There is absolutely no requirement in the bylaws that your state have 5 members. I'm prepared to knife fight to the death for any state affiliate with 2 or more members that wants to apply to the national committee, if anyone on the national committee wants to contest the approval with a knife fight. I get to bring my own knives.

Having said as much, I would encourage you to get 5 members together because it is a stable number and likely to keep going. I would encourage you to recruit 50 members as fast as possible because you'll need help state-wide, because you want people to work on ballot access, because you can raise more money with more people involved, and because if you tell two people, and they tell two people, eventually everyone who wants freedom will know.

I think you should have ambition to have 500 members by the end of this decade in Colorado. That should provide enough to have nearly every county have its own party affiliate. Up for the challenge? Makes five look like small potato stuff.