Hi Emily,
Everyone has their opinions on itineraries but here are some thoughts for you. If you aren't planning to take advantage of Extra Magic Hours (EMH), plan to visit a park on a day when it is not offering EMHs. You may avoid some of the crowds.
Plan on Epcot on the day of your Akershus reservation. It makes sense to visit Epcot on that day & not running back & forth.
If parades & the nighttime firework displays are a must-do, plan to visit that park on an evening when they are offered. Fantasmic is not performed every evening so if you want to see it, plan to go to Disney's Hollywood Studios (DHS) on that day. Parade & fireworks schedules are available online by clicking on these links:
Magic Kingdom
Disney's Hollywood Studios
Disney's Animal Kingdom
Epcot
Select a month from the drop down list. Then click on a specific day for parade & fireworks schedules. Keep in mind that schedule are always subject to change without notice.
Involve your 6 & 5 year olds in the planning. Ask each of them what their 4 must-dos are for each park & make those a priority. You can even
Customize your own Maps.
If you have a late evening in a park, don't plan to visit a park first thing the next morning. You've got plenty of days to enjoy some of the amenities at your hotel or other things on property without spending every minute in one of the parks. Wishing you many magical memories :-) Allison