@Brian Legg, I have to agree with @Matt Motil and @Federico Gutierrez about just taking action. While I am not as experienced as many on here, I can tell you that my "plan" has changed probably more times than I can count. You definitely shouldn't rush into something until you are knowledgeable but by no means do you need to do all of the stuff on your list before you purchase something. You will definitely learn by experience when it comes to the actual management side of things.
I would also agree about aiming for more than $100 per door and make sure you account for capital expenditures. I purchased a duplex last year with an original furnace from 1924. On the one hand, it was 80 years old but on the other had been there for 80 years and was still kicking. What were the odds it would fail in the next year or two? Well, it failed 6 months into my owning the property. It cost about $2,500 to replace and ate about 6 months of cash flow. Luckily though, I planned for those kind of surprises so no big deal. Also, at $100 per month per door, with a duplex, a $2,500 expense is over a year of profit if nothing else breaks.
Overall, I think you've got a great plan and great motivation. Just be sure not to get bogged down in "the plan" and not take any action. I'm in Parma and on a similar path to what you are going for, feel free to connect if you want to chat.