That list sounds like you have covered just about everything!! I have a similar list going that I keep adding to. We'll probably be packing our entire lives when we go with the way the list is growing!!
As far as the must-do's, I have to echo someone above and say Stitch's Great Escape?!?!

Has he done it before and just really liked it?? Because man do I love Stitch, but hated that attraction! If it's new to Michael, then I do hope he enjoys it but that made me

.
Man, two weeks!! I know when I started reading your PTR, September felt a loooooong time away, so December felt like a lifetime. But now your trip is right around the corner, and I'm so excited for you!! And it just means mine is closer too!! Don't stress, you will get all the important things done before you leave, so don't sweat the small stuff. YOU'RE GOING TO DISNEY WORLD!!