Well, MK is my "Happy Place", and I hate AK, so depending on what was offered which days, I would do:
Day 1: MK
Day 2: DS long enought to ride TSM/Epcot WS
Day 3: MK
or
Day 1: MK
Day 2: DS/Epcot WS
Day 3: Epcot WS
Day 4: MK
At this point, besides browsing shops, there's not enough at DS that interests me to spend a full day there. Before my last trip, I considered WS cool, but not a full day thing, but I went with a couple friends and we spent over an hour browsing shops in Mexico alone. Epcot WS is now a full day destination for me!
Ress