Washington and the Colonials didn't win by coming up with a master plan that would defeat the British once and for all, and then putting all their hopes in that plan. They did it one battle at a time, one tactic at a time, until one day, the British walked into a trap. They won it by continuing to fight in the day to day, hard slogs, and never being annihilated, even when they lost.
Your comparison of Levin's Convention plan to Valley Forge is absurd, delusional even. It is an idea for a quick and easy way to reverse 100 years of progressivism, take away power from every sitting judge, send home Congressmen and make void the actions of decades of prior government. It requires the consent of 38 states. Going in, you know that you can't get 38 states to sign on to a proceeding that reverses progressivism. It's noble, perhaps, but quixotic at best.
Your argument is essentially, "follow my plan even though it's doomed to failure" because the revolution would have never been won with people thinking like that. However, the Revolution, while at times looking like it was in trouble, was never doomed to failure. Your hero's plan is. Your plan is like a full frontal assault by Washington on the British at Philadelphia on the hopes that half the redcoats would refuse to fight back.
Your Plan A is to abdicate your own responsibilities.