I would caution you not to necessarily expect your NOI to be higher because you achieve higher rents leasing units to Section 8 tenants.

They’re lucky it is still standing and I’d expect it to fall down any second. 

Since I undertake a number of projects with passive partners who maintain ownership interest in the LLC, I often have to negotiate this with the banks ahead of time as I customarily solely guarantee the debt and that's my LP's expectation.

Also, the tax benefits you expect might be over-hyped: https://www.biggerpockets.com/forums/51/topics/1075919-five-...Figuring our whether there is a useful tax strategy in your situation would take a one-on-one consultation with an experienced tax strategist, and here is how to find one: https://www.biggerpockets.com/forums/51/topics/1222774-expla... 

their threat demonstrates their ignorance of the laws and expectations.  

What specifically did you expect them to do to prevent them?

@Nick Rutkowski no good deed goes unpunished by desperate people:(We try cash-for-keys (CFK) all the time, but tenants always think they're smarter than us.Most are so ignorant, they expect the funds BEFORE they move out.NEVER!

What more are you expecting?

Regardless, you might find the copy & paste info below helpful:)--------------------------------------------------------------------------------------------------Recommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

You need a skillset that you can manage tenant's expectations and enforce the lease with a professional but firm manner.