Really, you have 4 deals remaining on the table that represent 4 distinct analytic exercises, -Only Then- can they be considered in aggregate to assess/develop an overall strategy.Your question is really FAR more complicated than, how do I take advantage of the subsequent lien opportunities on top of the utility liens already purchased - either through loans, partnership or some other avenue.

It proposes to strip the power from the city and give it  to the state.

Does he have a power of attorney?

Seems to me this is more of a ploy to curry favor with a protectionist administration and a powerful congressman rather than an economically-driven investment.  

Costs:loan: $3100Tax: $800Insurance:  ~$150Cap expense: 3 * $250 = $750Maintenance: $250Vacancy: 5% of $2000 * 3 = $300 (this is very conservative compared to what I actually have)Misc: $100 (this unit does not require a gardener but I am unsure of how laundry room is powered and other utilities)Total: $5400Rents: $6KLaundry room: $150Total: $6.15KSelf managed cash flow: $750Note with property management at 10% it would be virtually cash neutral ($150 positive cash flow).Note I have less than 5% vacancy. 

The first thing they need to do is figure out wireless power, and finally get rid of all of those pesky outlets.

And you're talking of tying up all your borrowing power for another 10-15 years - BEFORE you start receiving that 5.5% return?

First you need for someone to have the legal power to sell it, which likely involves probate.  

Developers decades and decades ago water was very cheap so developers did not want to spend the cost to separate versus power and gas.

But if the rest of the plan is solid the 1031 exchange will allow you to harness the power of compound interest from the deferred taxes.