I've hired Code Louisville [1] graduates across multiple roles now. This is a totally free program in Louisville, KY and does a great job of getting people setup for a new career. CL grads are all over the Louisville area doing amazing work.
Of course, all these programs are what you make of them. The best graduates are people that were really invested in learning and took advantage of the curriculum and mentors. For those that put in the work, they come out punching way above their years of experience.
You can use the more barebones Worker Sites and retain file extensions. Pages has nicer UX (automatic PR preview sites!) but the old school Worker Sites setup is dead simple and does exactly what you want - it's just a template setup to load assets from KV storage.
Of course, all these programs are what you make of them. The best graduates are people that were really invested in learning and took advantage of the curriculum and mentors. For those that put in the work, they come out punching way above their years of experience.
1: https://www.codelouisville.org/