Well said matchewed.
In essence, many new to FI get caught up in all these calculations and things that aren't important at all on your journey. You probably have at least 5 years, maybe up to 15.
What's important right now is: cut stupid expenses, figure out a personal AA, dump all your excess money into that and watch it grow.
(Some people have other things they like, such as track every penny - depends on your personality.)
But for now, KISS. Save as much as you can, and start to learn. As long as you continue that, you'll learn about the proper mix for your accounts (regarding both AA and taxable versus non), withdrawal strategies, tax strategies, etc.
You don't have to know how to build a whole car to start driving. But it wouldn't be a bad idea to start learning as you drive in case you need to fix something along the way.
(Or some less terrible analogy.)