Hi Christa!
I admire your solid Magic Kingdom Park plan. As Uncle Walt once said, "It's kind of fun to do the impossible." I think if we strategically schedule these attractions you can certainly get as close to your timeline as possible.
If you're a guest of a Walt Disney World Resort Hotel and can visit Magic Kingdom Park during a
morning Extra Magic Hour day, that would definitely help with your goal. Most of the attractions you mentioned will open exclusively for Disney Resort Hotel guests an hour before the regularly scheduled park opening time, which will help you get a lot more done in that short amount of time.
If visiting on a regularly scheduled park day, I would recommend setting up your first
FastPass+ reservation for the moment the park opens and then scheduling the second for an hour after that. FastPass+ is a system included in your admission to save your spot in an attraction queue while enjoying something else in your Disney Day. You technically have a 60 minute window to redeem each scheduled pass, so I would experience as much I could as soon as the park opened, then go to my FastPass+ reservation about 55 minutes into its window. After the first, I would go straight to the second reservation as soon as its time started. This way I could hit as many experiences before their lines stack up, and once they do, I could go straight to the front thanks to my FastPasses.
Pro Tips: Enchanted Tales with Belle is like an amazing interactive play where your family might get to play a part. It does take about half an hour, so I would schedule it as my first selection. I also think Dumbo the Flying Elephant is a great line to wait in as it's actually an enclosed play area with seating and outlets.
I hope this helped, Christa, and We'll See You Real Soon!
~Kristen