Unit is too small to get a high volume of usage that would make the expense of buying and maintain the machines worthwhile.

Money - for the volume I get into I will need a money partner.

I have yet to find a seller, but I have not been putting out the call volume that you recommended.  

Considering the explosive buying spree that took place at the end of 2021 (where investment volume reached $322.3 billion) it may seem like investment has dipped in dramatic fashion, but property markets are in a very different position than they were six months ago.

And of course the added volume for you and flexibility of being your own landlord if your business ever sustains a turndown.  

I would try to become an Evolve Partner see if they will renegotiate their fees and give volume pricing.Then I could go back to finding Real Estate deals and improving the Real Estate to use vacation rental properties and other hospitality properties.

I believe that your "volume discount" for buying 6 units might get you a deal.

I (and you) can see the court costs attorneys charge for unlawful detainer cases, and there is a vast difference when an attorney charges hourly vs the high volume attorneys who charge by the case. 

Depending on your volume, Google business suite (sheets / docs / Drive) should be plenty.

Another book that I liked was Multifamily Investor volume two.