Basically the family of the units are wanting to get rid of them.  

I'm basically spending about $100K to get 3.6% back in positive annual cashflow.  

I agree w/ Dmitri & Russell.This tenant sounds difficult to work with, and I'd want her out as soon as possible, w/o any incident.I'd take the lack of last month rent as loss, but turn it over as quickly as possible, and hope to find a better tenant, who'll stay long term.So basically cut the loss, and move on.

Read @Brandon Turner's book so you have the creative low money down strategies in your bag of tricks.

In basic terms:(there are exceptions)A "delivered" deed changes the actual ownership of the property.Above I stated:"In most cities the record will not change until the new owner files the PTA."

So basically $0/m cash flow.If you were living in one of the units then maybe it'd be worth house hacking.

There is not only a lack of real estate and brokerage knowledge but also basic business knowledge here. 

Basically, does selling beer and wine make a big difference?

And finally, any tips, tricks, opinions, or any comments about this would be incredibly appreciated. 

Sounds like wholesaling which is a very gray area and basically you are doing things a real estate agent does without a license.