I'm looking into learning stenography as a part of a school project, and my setup also consists of a Planck keyboard and the wayland graphical environment. As far as I understand, this project is my best shot at getting started, but since I'm new to it all, I don't understand the caveats you have listed. Are they trivial enough to work around, or will my learning experience suffer from them?
Also, I'm having problems installing wayplover with cargo install wayplover
(it fails when compiling bitvec, for some reason), so I'm currently working on a nix flake for the project. I can submit a PR with this if you are interested.