Hi
As long as your reasonably mobile I would suggest the following:-
Tusker House (AK)
Drive time <10mins
Time to Entrance from Car Park <5 mins
Time to walk from entrance 5-10 mins
Adding some spare time, you are best leaving at 7:20am
Akershus (Epcot)
Drive time 10-15mins
Time to Entrance from Car Park <5 mins
Time to walk from entrance 5-10 mins
Adding some spare time, you are best leaving at 7:10am
Crystal Palace (MK)
Drive time 15mins
Time to Entrance from Car Park 10-20 mins
Time to walk from entrance 5 mins
Adding some spare time, you are best leaving at 6:55am
Hope this helps
Paul