The majority of us here see everyday as open carry day - no one day is more important than the others. We are each an army of one educating, defending and promoting self-defense through OCing, lobbying, letter writing, and speaking. Collectively, in groups generally of the state level, we have already become very effective at advancing the ball.
Your idea, while noble, is not original. There is a lot that goes into such an effort logistically (time & money too) that must consider various state laws, existing organizations and whether the effort is worth diverting resources from other campaigns/programs. An effort of this magnitude takes up to a year to get it up and flying, or it produces a low level response with the accompanying negative reports.
No slight intended, but you are new to this forum....an unknown quantity. Might suggest you get involved in your state level grass roots organization and help out there - develop a track record of seeing your ideas develop successfully. Then others may consider your thinking in the light you desire.