If not, you can get it registered on the historic list. 

It’s currently listed at $40,000.

➡️ Can you provide a list of different finish outs for the units (e.g., classic, semi-upgraded, fully upgraded)?

Make sure the current rent amount they list on their applications matches what is deducted from their bank account every month, and also ensure it's withdrawn from their account on the first of every month.

Please add me to your wholesale distribution list

A few weeks later we saw it came back on market, we checked it out and made a quick offer to land it $25k under list price.

That said, stock pools are inexpensive but I'm not sure they are anything more than visual candy for your listing - and perhaps more hassle and most adults won't look at that anything like a hot tub experience. 

An agent can use an "exclusive listing agreement" with an option to sell it off market as a "pocket listing."

You can start out by joining groups, and posting the listing there.

So once you get to 5 units, most investors end up on the commercial mortgage side of a bank.And as he notes, from a brokerage standpoint, in my market, I see most 8 units or less exclusively on the MLS.  8-20ish units are a mix of MLS and Loopnet/Brokerage sites.  20+ units are almost exclusively listed by brokers that specialize in multi-family and you will not see their names on yard signs anywhere.