Would it be possible to get part of the course? I'm quite familiar with most of the stuff you're describing, but writing a performant templating engine seems interesting, especially given that you're trying to minimize the number of deps.
I'd assume yes. This depends a lot on the platform I choose, but most online courses allow you to gain direct access to the various bits. Some of them are flat monthly fees, others per course.
I'll keep this in mind when choosing how to setup the course.
Initially I probably won't focus on performance too much, going for simplicity instead. Though, starting with simplicity is how we get to performance.
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