The question was really more out of curiosity and the desire to connect with a broker. 

There are some pretty nice discounts on many products and services offered as Perks to BP members that you might want to check out: https://www.biggerpockets.com/perks/proIf you are looking to connect with other members near you, or want to learn from people in a specific area you’d like to invest in, or have a desire to find people interested in certain topics, you could use the search feature here: https://www.biggerpockets.com/search/users

My primary residence is a Baltimore city row house in a desirable neighborhood.

You need money in your checking account.You say you don't want to sell and desire to buy more properties.

All parks get older and less desireable.

I'm happy to extend you two free months access to proof of funds to demonstrate our sincere desire to be a funding partner in the future.

Also, if what they owe is more than 65% of ARV minus repairs and what you would like to make, maybe you could consult a SS specialist (if you're not comfortable with or don't desire to do SSs).You have a motivated seller so you should be able to do something with this lead to make money.Nice work so far!

Seeing this place really rekindled my desire to learn how to fly.

The all paid for house would be a stress reducer for any long lasting vacancies, and you can make sure the one that is free and clear is the less  desirable (if there is such one).Just some thoughts!

I think you will be more successful in the investment if you get lots of advice from local home decorating professionals, real estate agents, and others that deal with home buyer's needs and desires.