If the cash flow on the existing properties goes close to breakeven, seems like you would be increasing your risk of large capital expenditures, like roofs or heat pumps, without cash flow to sustain them. 

That money could pay for a new roof in two years, a new furnace or A/C in one year, new windows and doors, new flooring, etc.

The concrete has been poured, exterior walls, window, roof is done.

Ever since a competitors sales Rep told me on the side that it was the best and their pigment count was through the roof...I have never been disappointed!

At some point every house needs a new roof, new plumbing, new windows etc, so it is critical to understand how much money you have to budget for the next 10 years.

You could add a clause in the lease stating the penalty for late payment.I like the idea of electronic locks.I would identify the items that need updating and plan accordingly; roof, furnace, etc.

But uggh she did not say anything about punching holes in the roof? 

NYC flat roofs, the locale, and the lack of trees(sadly) make NYC a great option for solar. 

The after-repair value (ARV) of the property is estimated at $260K, which could net a profit of $15-17K after selling expenses.At the sale price of 260K, the property meets the one percent rule and features a brick exterior, new roof, 2 new bathrooms, and 1 new kitchen. 

Provided utilities, roof, bathrooms, kitchen, etc are operable?