Hi Heather,
Just a few months until your vacation. I'm so happy for you.
Your plans are a little tight in my opinion, especially if you'll be using
Disney's Magical Express. Once your plane lands, you should consider at least 45 minutes until the motorcoach departs. You then have another 45 minutes minimum until you arrive to your resort. The motorcoach may stop at other resorts ahead of yours, which could make your trip even longer. You may get to your resort at around 11:30 a.m. Star Tours may be able to take you to your resort in less than 2 minutes, but I'm not sure they'll be serving that day.
Check-in time for
Disney’s Pop Century Resort is 3:00 p.m., however you may check-in as early as 6:00 a.m., and take advantage of all the resort amenities. There's a possibility that your room may be ready by the time you arrive, so you could head straight to your room, and allow your younglings to take their obligatory nap. If your room is not ready, you could have some lunch or head straight for a splash at
Hippy Dippy Pool.
I think you’ll have a great time. Make sure you come back with any other questions you may have. Safe travels and hoping for no asteroid fields.
Ricardo.