Sorry to not reply for so long, but let me see if I can answer your questions.
Yes it does work with the original diagram, pins 2,3, and 4 for the mux's and A0-A5 for the analog inputs. That's the most basic configuration(no screen, buttons, or add-ons) and will work just fine. Everything else has multiple options for you to choose from, and you should choose what best suits you. Soon I'll do a post on how to set up a Teensy just like I did for the Arduino, and go through the options I've added. As for which PCB to use, I don't think the v0.8 would work, but the v0.7 (on the downloads page) could be easily modified to work. Hope this helps!