with some commercial brokers, property management  any expert help is an advantage !

Given that it's categorized as 'Community facility', 2.4 FAR should be allowed. 

I am a real estate broker and property manager based in Clarksville, TN and I specialize in working with investors.

This is how I see it:Single-Family Homes:Pros:Larger pool of potential tenants (families).Simpler management (one tenant, one lease).Often easier to finance.May appreciate faster in some markets.Cons:Only one income stream.Vacancy hits harder financially.Duplexes:Pros:Two potential income streams.Live in one unit and rent the other (house hacking!)

I wanted something I could fix and flip for the quick capital as well as the experience of managing a project, finding contractors, etc How did you find this deal and how did you negotiate it?

I managed a low end apartment block for several years. 

Apparently, the person I am under contract with was managing the estate of the actual owner who recently died.  

Are they way under market, or is it manageable for now?

My partner and I have a couple units we manage as well in Washington DC.

Why hasn't your property manager already answered this question?