Hello and welcome to the Moms Panel!
I can already tell that you are doing some fine planning. So, let us get you some much needed information so that you can continue with you planning.
The Magic Kingdom will have Extra Magic Hours on the following two dates:
Thursday, September 30th from 8:00 a.m.-9:00 a.m. (Fantasmic! is scheduled to be performed twice on this date at Disney's Hollywood Studios. Once at 8:00 p.m. and again at 9:30 p.m.)
Monday, October 4th from 10:00 p.m.-1:00 a.m.
Hollywood Studios will have Extra Magic Hours on the following two dates:
Saturday, October 2nd from 8:00 a.m.-9:00 a.m.
Sunday, October 3rd from 8:00 p.m.-11:00 p.m. (Fantasmic! is also scheduled to be performed on this date at 8:00 p.m.)
The Fantasmic! show dates and times listed above are the only times this wonderful show is scheduled to be performed for the dates you have requested. Seating begins 90 minutes prior to the start of the show. Always check your "Times Guide" as you enter into the park as all show dates and times are subject to change daily.
Have a magical day!