Understand that there are a ton of details too numerous to explain in a post.

The market has been pretty slow, however I have had numerous requests to rent. 

They will have overcome all your objections, no different than the sales technique taught to all car salesmen.The price quoted to me by Cassie, one of the assistants, was $30-50k for the *er-hmm* "mastery program" where "not everyone is accepted" (unless the mark is able to raise their credit card credit limit or have cash in the amount FB wants to suck out of your pocket, which they overcome the objection to by saying you'll recoup that amount in your first one or two deals.

Are there any calculators out there that can help me analyze this objectively? 

Consequently, low chance of owner(s) waiting for appreciation.Your objective is to connect with the owner(s), plain and simple.

The Object Oriented(OOP) terms are manager, controller, viewer. 

There are numerous reasons why I would like to start with MF, rather than SFR (economies of scale, fewer investors to compete with, allows for use of professional management, etc.).

These are two opposite objectives.

There could be mold under legs of furniture, dressers, and other heavy objects resting directly on the carpet. 

The advantages of investing local or nearby are numerous and the disadvantages of investing 1000 miles away are numerous.