When it comes to this idea of keeping your ideas moving, I always think of a river. When you have a flowing river, ideas ind ideas out what ends up happening,. ou can actually see what you're thinking so much better. It's more important to stay and flow, to feel the flow, than any particular outcome. Any problem is just a more interesting puzzle for you to figure out because you'e enjoying each moment.
Systems that must be perfect to be reliable are deeply flawed. Instead of trying to create a perfect organizational system before starting to create things, concentrate on consistently moving your projects and goals forward. Your Second Brain will evolve to suit your needs only when you put it to use in your daily work.