Additionally, the real estate company who sold it to me reached out and said they would be willing to buy it for 620k.

We feel like we can remodel and renovate the properties to bring in an additional $2,000/month(by turning one of the 1 bedrooms into a bi level three bedroom by taking advantage of the large pitched roof in each property.) 

Does anyone know any additional requirements?

I imagine I could do this with up to 20 with minimal challenge. 

Having a solid 9-5 with minimal debt WHILE building my side hustle is exactly what I wanted to do. 

These are professionals with additional training and a stricter code of ethics.

In addition to an accountant, you should consult an attorney on how to use your LLC to limit your personal liability which is really what it's for. 

If you think you’ll need to invest additional capital in them in the near future then you should make sure you know exactly where that money is coming from before you buy the property since your future employment is in question.The bank will look at your current financial situation, but they don’t typically inquire about your future state.  

The services should be to help maximize cash-flow and minimize associated fees to increase a repeat client pool.

Add it to your list now.As for suggestions as what to do.