Yeah, documentation is a real PITA, isn’t it? 
Thank you. I think I’m going to go on and order a Tablo and use that for now, but plan on ordering the other stuff to build a DVR out of tuners and a computer for Plex or Channels later. That way I have something simple now and, later, when I have time, I can put together a custom system. One for here, one for down in the barn.
Thank you, everyone, for the help and thank you, @cjcox, for the work I know it took to put a program together and for the help in explaining it here!