Great write up! I like that it starts with Culture and People to create a strong foundation. As you say, People are the hardest part. Having a good structure, routine and communication help make it manageable. I think this provides a nice framework to build around. I'm a co-founder of a company makes tools to help manage a lot of those processes you discuss so this resonated with me. We built our platform based on many lessons learned managing previous start-ups, and converged on a very similar approach.
If you're into this sort of management style, here's our platform which aligns well with what's described in the article. It supports flexible one page plans for a concise way to document your strategy, functional accountability charts, priority and metrics tracking as well as a meeting space to set a consistent rhythm - also performance reviews to tie it all together.