So ... are you not planning on any parades, night parades, fireworks or Fantasmic? I only ask because it seems that these would be things that a large group of 15 would need to plan for. Or are people on their own for those? You mention IllumiNations, but not any of the others. It's not like a group of 15 can just show up ten minutes before a parade and get a good spot ... and I would think a plan as to where and when to meet in order to get seats would be essential for Fantasmic! (Or even for shows like Beauty & the Beast, Lion King, Nemo ...)
Or are those details that are on the "master" list, but not on this more condensed version?
Otherwise, though... looks like a great itinerary. Have fun!