IMO it’s fine to just make a post about it in one of the larger communities that seems appropriate. Now is exactly the time for us to promote one another! And Lemmy doesn’t have an algorithm, so you’re going to have to do some leg work to get the word out. I think people will be appreciative and understanding of that, I would be.
I’ll admit that it looks cool, but man…I just have a hard time seeing how that could possibly be functional.