I’m probably the wrong country (UK) to help directly but I lead a team of technical educators and happy to have a chat about the path of useful. Email in bio.
If I've learned anything: technical skills need to be medium, teaching skills need to be high. I also observed about 5 teachers (sitting in on their classes with their permission) and have seen teachers that have:
- high programming, high teaching skils (e.g. compiler construction, web-design, SIMD stuff, reverse engineering with x64, PHP, C++, trees with cycles, it didn't matter, he could do it)
- high web dev, low teaching skills (he got fired)
- high web dev, medium teaching skills, from a macho culture (he got fired, as I come from a more egalitarian/feminine culture)
- medium web dev, high teaching skills (he aced it)
- Myself