-> My first question is: Can I use the same setup instructions Avon provided for
-> the Raspberry 
-> Pi to set up Mystic on Linux?  Not sure what O/S the Pi runs on.

The Pi runs Linux.  The most common distribution is Raspbian, which is
the Pi version of Debian.


-> Second question: If I use a VPS hosting package with root access, will this
-> work?  I was 
-> looking at: https://895-inet.com/linux-vps-web-hosting/ to see what is
-> available.  Does 
-> this package look like it would work?

http://www.interserver.net is what I use for running my BBSes and my
personal email server on 2 Windows Server VPSes and 1 Debian Linux VPS.
Windows VPS service with them is $10/month and Linux VPS with them is
$6/month.

--- Platinum Xpress/Win/WINServer v7.0