Dedicate one checking account and credit card exclusively to real estate.

Then we found out the furnace and hot water heater were stolen. 

People told us that the streets weren't safe at night, and I can confirm that because we had a trailer stolen from a parking lot overnight!

As a generic advice:  I would recommend paying off any credit card debt, or high loans. 

Real estate will not be the get out of jail free card without these things in order.

Also, Credit Card suggestions for best business card for benefits / perks right now?  

I am also going to try to start dispute with my credit card.

Why are you re-installing mechanicals on vacant properties - after they've been stolen?

I get calls, texts, cards and letters constantly on this rental.

Well....should you invest in a city where the people elected a woman with foreclosures, liens, judgements, garnishments, ethical violations from the state ethics board,  misused a city credit card, went three years arrears on her federal taxes all while yelling for other people to pay "  their fair share, " left skeletonized dead bodies hanging over Canal St for months on end covered only by a tarp until the wind blew it off to reveal to our horror her blatant disrespect for human dignity?