If the population within a 3 mile radius of your parcel is 10,000 people, that tells me the area can support roughly 70K to 80K of self-storage.

My days became a constant cycle of worry,  IEP meetings, doctor and therapy appointments for my son, loneliness and financial strain due to our income suddenly cut in half. 

You buy now as second home (if 100 miles from your home) investment if not...

Due to the kicker and a few small scholarships, we expect the benefits to pay for one of our kid's college education, and half of college for our second.https://www.military.com/education/gi-bill/the-gi-bill-kicker.html

You don't really want to be in the boat of managing one SFR from a thousand miles away (it may different if you had a few), and then have your section 121 exemption "expire", and have to pay taxes on the gain.

Math works out the same for you, but the difference is half as many doors and no partners to deal with. 

The big hair on it is that the rent roll shows an outside company own about half the trailers.

Also what worked better for you, a set fixed price for utilities every month, or simply splitting the bill (ex: half and half) when it came?

I am trying to buy 6 parcels five of them are adjacent to one another and one is about a mile apart.

My prediction is that home prices will continue to fall in areas dependent on the L trains until a month or two before they shut down the line - then I think prices will stay low until maybe half a year before the project is completed (there will be light at the end of the tunnel, pun intended), at which point prices will rise to all time highs.