Just ridiculously good as usual Brian, you continue to set the bar higher and higher each time I see a new post from you, well done. A quick point regarding point 16 about Google only counting the first anchor to a page, what is your opinion about links that go to DIFFERENT pages on the same site. I believe they pass equal weighting but would be good to get your option.
Backlinks. If content is king, then backlinks are queen. Remember, it's not about which site has the most links, but who has the most quality links pointing back to their website. Build backlinks by submitting monthly or bi-monthly press releases on any exciting company, and contacting popular blogs in your niche to see how you can work together to get a backlink from their website. Create the best possible product site you can, so people talking about the products you sell will link back. Try creating graphics or newsworthy content that will influence bloggers and news websites to link that content.
Structured data21 is code that you can add to your sites' pages to describe your content to search engines, so they can better understand what's on your pages. Search engines can use this understanding to display your content in useful (and eye-catching!) ways in search results. That, in turn, can help you attract just the right kind of customers for your business.
Lastly, it's important to remember that paralysis by over-thinking is a real issue some struggle with. There's no pill for it (yet). Predicting perfection is a fool's errand. Get as close as you can within a reasonable timeframe, and prepare for future iteration. If you're traveling through your plan and determine a soft spot at any time, simply pivot. It's many hours of upfront work to get your strategy built, but it's not too hard to tweak as you go.