Personally I feel like you have a lot of park hopping with little ones. You have yourselves in MK 4 separate days...why not do 2 full days there plus the party? Same thing with Epcot, rather than stopping in on 2 separate days I would just spend one day there (even if not a full day). I realize everyone likes to tour differently, but we did not like to park hop when our kids were young. It just felt like too much time wasted on traveling and a lot of work with strollers on the monorail, buses, etc. My plans would be more like this:
Sat 11/25 - arrival
Sun 11/26 - MK
Mon 11/27 - Epcot
Tues 11/28 - pool/rest day,
MVMCP
Wed 11/29 - HS (later start after being out late night before)
Thurs 11/30 - AK
Fri 12/1 - MK
Sat 12/2