I also use Deal machine to help D4D.

That is maybe "a" part of the greater machine, but that's not it. 

I have never been the big corporate machine type person.

You traditionally want 10% set aside for ordinary maintenance (broken doorknob, repair the washing machine, etc.) which is closer to $200 a month but he only accounts for $125.4.

My thought was to clear the back acre, cover it with gravel (or millings)  and offer machine/equipment storage until the proper time to build the expansion.  

The other day my guest contacted me about needing help with a coffee machine, said cannot find the manual for it among other manuals we have at the cabin (I need to double check that by the way when I be there).

Sounds like the Minnesota house is a mess and has the potential to be cash eating machine. 

We can add our own machines but say that they are for exclusive use of one unit in the building.

WAIT WAIT WAIT...Everyone just stop.Let me paint a picture for you here.I used to be a robotics researcher, scientist and engineer.I have worked with NASA, IHMC (The Institute for Human and Machine Cognition), and IIT, Istituto Italiano Di Tecnologia.I have worked with the brightest minds on this planet.

The responses were:2 disconnects, 2 wrong numbers, 1 "we don't do that", 3 answering machines, 1 receptionist, and 1 that just continued to ring.At that point, I figured I would rather travel a bit and work with a real specialist in the subject regardless of their location.I actually put "attorney atlanta" into BiggerPockets' search box.