We are now going with three days at HS. We have six day park hoppers and a MK DAH night (so 7 total park days). Was going to do two at HS, and two AK, instead doing three and one on those, Epcot one and MK one plus DAH, and mixing in park hopping.
Epcot-1
MK-2
AK-1
HS-3
Park hop sometimes in the evening if we feel up to it at Epcot and AK again for certain to catch a couple rides in particular (FEA, Test Track (and I want to see a few of the Epcot movies), in AK the kids want to do Dinosaur and Primeval Whirl again (Avatar maybe again right before closing), maybe MK also at night we'll see how we feel while there on the park hopping.
I think this is more of a MK/HS trip after all for us. We mostly have spent time in MK previous trips, so this is a switch.
I also ditched quite a few dining reservations, especially after pricing them out for four adult prices- character breakfasts, gone.