But, her openness about her hiding cash from the IRS and her ex-partner screams of wreckless behavior and certainty increases her chances of appearing on the radar of the IRS.

Will defer to others with more knowledge of local area, but 450 sqft rental spaces screams transient income renters to me, which is exactly what you don’t want to be dealing with when trying to establish consistent, reliable cash flow. 

You are simply in the shark tank at that point, blood is in the water.

They scream gentrification if you paint a building, fix a roof now days.

When she started yelling and screaming at me (power crazed) I told her a few choice words.

They are a pain in the @ss but are just doing their job and being nice to them will get you further than screaming at them which is what most landlords do.You can do it on your own but if its killing you, hire a lawyer, the peace of mind is worth the money.  

I've been bouncing the concepts around and around, but the following scenario keeps staring me in the face and screaming: DOUBT ME!

I do NOT wish to renew the lease due to various problems with this tenant ( complaints about tenant smoking weed in the hallway; tenant being late at least 5 times with paying rent and incurring late; tenant refused to allow complete access to apartment during annual inspection; constant yelling and screaming coming from tenant' apartment, etc).I need to find a NY Landlord/Tenant  attorney who works in the Brooklyn, NY and is very familiar with LINC housing program and/ or Section 8 program.Thank you for any information you can provide.

Kind of screams NO.

That in and of itself screams ghetto, low income and uneducated tenants is what you're going to get.