Even if I were sued, I document everything and obey the law, so I won't be found guilty.

And despite what this society says about being innocent until proven guilty, do you really think a federal grand jury, presented with this information, is going to unhesitatingly believe you actually lived at that property for that year?

And on and on.The best way out of this is to go the the city, plead ignorance and stupidity and ask for their help.

Four months later, this unit is freshly painted, well heated and cooled, improved with the addition of a washer, dryer and dishwasher, and fully furnished.I listed it on Furnished Finders for a monthly rate I felt a little guilty about.

This person also has more of a criminal history than they let on, being convicted in the 2000's decade and having arrests and charges even up to 2018, some of them for things like DV, making threats, drug/weapon possession, and driving without a valid license, although on the more recent ones they may have been found not guilty.

Going off your narrative here, yes your 100% in trouble and guilty of violating Fair Housing regulations.

The appraisal came back and appraised for what I offered so you can see why I am upset and had to plead with the wholesale company to not drop me and take my 5k.  

Even if I were sued, I document everything and obey the law, so I won't be found guilty.

The buyer & seller are going to say you were brokering real estate without a license, then snitch to the Louisiana Real Estate Commission, and that's a $5,000 fine if found guilty.   

The only way to find out is to be reported to the Commission, have to plead your case, and it's up to them whether you were brokering a deal without a license or not.