The goal, however, is to have best CoC Returns in passive income, while the long term gains of appreciation in say 10-15 years, are more of a given.   

First, your goals should never include a number of properties...those are the wrong numbers to focus on.Second, holding the property appears to not be a profitable solution. 

@Aaron Klatt also prime areas are always more liquid, which is my primary goal.

But that's the only way to grow. putting yourself outside of your comfort zone is the only way that eventually this stuffed becomes your comfort zone.Keep your long-term goals and the big picture in mind - you are not only living for free you are also building Equity every single month.

Based on your goals, desires and budget; their may be another better real estate strategy than wholesaling or wholesaling could be the perfect fit for you. 

What are your goals with this property? 

The goal was to secure the apartments that were not rented. 

In my search for knowledge and aquiring first hand and realistic education, I think a job in real estate may help me learn faster and come with more 'aha' moments.

What tips do you have for the future to close faster and/or get buyers who can afford the price?

Things like what market it’s in, what condition is the property in, what the rents are and what the market rents are, and most importantly what are your goals.