But I wouldn't take possession with a 5th tenant in there 

The agent being there is actually good for you, because legally you are not the sellers agent and there is a tenant living there with all their worldly possessions. 

But how does this compare to "Note Brokering" - or clearly the practice of connecting a note seller to a note buyer and collecting a commission.With that said, does note brokering pose a legal issue as well if you're not in possession of a RE license?

There is no guarantee that you will even take possession of the property.

I have heard and seen on this forum sometime ago where someone used the prinicple of adverse possession to gain property for themselves and et themselves out of homelessness.

I presume you want the property and the benefits that come with it (possession, rent, cash flow, appreciation, tax befits, equity and title).

. : If a lessee of real property remains in possession thereof after the expiration of the hiring, and the lessor accepts rent from him, the parties are presumed to have renewed the hiring on the same terms and for the same time, not exceeding one month when the rent is payable monthly, nor in any case one year.Likewise, a tenant could terminate a periodic lease by giving e.g. a 30-day notice, and - surprise, surprise - instead of moving out, send the next month's rent on the day of the planned move-out.Frankly, I don't believe this was the intent of the law.

I have personally people who have taken more than 2 years and over 50K in legal costs to get possession.  

I'm thinking perhaps even if it's a C class neighborhood, not only thinking of renovating the units is good to attract better tenants, but protecting possessions/creating extra storage space might be a benefit?

Now waiting for the Sheriff to serve the Writ of Possession and it looks like in Miami it takes forever BUT I know we will have our property back soon!