Not sure this YouTube series is the right fit for your project. Razavi's course is focused on signal processing (for future integrated circuit designers), whereas your project is power processing. Quite different approaches. The only comparable academic alternative that comes to mind is maybe CU Boulder on Coursera, which covers at least some of your project. I'm not conversant enough with hobbyist-oriented resources to make a more relevant suggestion.
How deep do you want to go in terms of where to draw the line between building and buying parts?