In my area I'm allowed to rent it out that way but I don't plan to get separate addresses because I want to be able to have the flexibility to remove the doors I'm putting in should I ever want to sell it as a SFH in the future.

I think you missed where @Drew Sygit said that is a copy and paste of advice he gives to those asking about PMCs and asked how many of the questions applied to your screening so he could adjust the content for future posts.

I’m looking for some guidance on my next steps toward achieving financial freedom through real estate.My long-term goal is to acquire enough rental properties to secure my financial future.

Plus, we will start to lose future customers once we are at 100%. 

As I am building this plan, is there a rule of thumb I can use for future value based on NOI?

You can conquer it anywhere.Feel free to connect, always looking to talk wholesaling and support fellow wholesalers/future investors.

I'm keeping a list of all the real estate books I need to read in the future and I want to be able to own some commercial real estate properties (large or small) someday too.

Beyond those avoidable expenses you will incur, how did you fair with liability protection during the renovation process and  into the future with your acquisition/renovation thus far?

If you wanted to be super careful you could have an attorney write up a new easement and record it for the benefit of future owners of both properties. 

Developers are seizing the opportunity to convert these spaces into much-needed retail and healthcare facilities, bringing new life to once-abandoned properties.The Future of Closed Drugstores: Plasma Centers, Restaurants, and Dog Parks