Maybe this feels a bit too scattershot for you. Buzzsumo also allows you to find and observe influencers. What are they sharing? By clicking the "view links shared" button, you'll get a display of all the unique pages shared. Sometimes "influencers" share all types of varying content crossing many topics. But sometimes, they're pretty specfic in the themes they share. Look for the latter in this competitive research stage.
It’s free to be active in online groups and on websites that are relevant to your business and community—and it helps you to obtain more traffic. Comment on blogs and social media posts, answer questions people are posting, and participate in conversations about your industry. The more you engage with your community, the more exposure and profile visits you get.
On the other hand, I'd like to know how many people constitutes your new experience as an indipedent consultant? Infact, as others noted in the comments here, what you suggest is perfect especially for an in-house SEO situation or in for an Web Marketing Agency with at least 5/8 people working in. Even if all you say is correct and hopefully what everybodies should do, I honestly find quite difficult to dedicate all the amount of time and dedication in order to check all the steps described in your post. Or, at least, I cannot imagine myself doing it for all the clients.
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.