Here was my plan in Dec 2016, so there may be some must-sees for you that were opened after this plan:
AK: rope drop EMH, Kilimanjaro Safari, Everest, Kali River (had to wait for this to open)
bus to Hollywood Studios, where I had made my FPs
HS: Great Movie Ride, Toy Story Mania FP, Star Tours (actally, I think the FP was earlier so it would expire), Tower of Terror FP, Rock Coaster single rider
boat to Epcot - I could have walked, but boat was part of the experience that day . I picked up a Soarin’ FP while waiting for the boat
Epcot: Gran Fiesta Tour, grab lunch, Test Track single rider (bonus, line so short I did it twice!), Mission Space orange twice, Club Cool, Soarin’ FP
Monorail to TTC, picked up Space Mountain FP, ferry to MK
MK: Mickey bar treat, Pirates, Big Thunder, Haunted Mansion, Cosmic Ray’s dinner + Sunny Eclipse, People Mover, Laugh Floor, Space Mountain FP, Wishes (on walkway from Tomorrowland, not a choice meant for viewing but just for listening), Jungle Cruise, and done just after 10pm while MK was still open until midnight.
This was a challenge based on my son-in-law’s favorite attractions that he thought could be done in a day, and I had plenty of time so I fit in several of my favorites. Total about 14 hours. Longest wait was for Big Thunder, about 30 minutes.