Love the careful progress towards a solid launch.
I would caution not to get paralyzed by perfection when it comes to content. From the first publishing to the 100th, you will make such progress in quality, you will probably wonder why you delayed at all.
None of your submissions/videos will be a home run. They will all be steps in the right direction and careful deliberation is just a step toward publishing good content.
Forgive yourself and just start producing so that there is a little body of work to consume as people gradually discover the channel.
Awesome stuff!