One thing to think about is you won't need fastpasses in Fantasyland before 10:00/10:30 a.m. aside from Mine Train. The other thing to think about is how much back and forth you want to do, even within the lands. For example, we usually go around Fantasyland in a circle starting at Peter Pan, then IaSW, then either go toward Winnie the Pooh, Dumbo, etc. and around to Ariel's ride and Enchanted Tales with Belle, or the opposite (go to Enchanted Tales with Belle, Arielle, Dumbo, etc.). It may not seem like a big difference but with all the walking you'll do over the course of the day, every little bit helps - especially since you have all kinds of extra FP+ anyway so I assume you can pretty much ride whatever you want, when you want. Similarly you're crossing back across the park to eat at Cosmic Rays and do the Peoplemover and then going back across the park to Frontierland. If you change things up and go Peter Pan, It's a small world, Enchanted Tales with belle, Ariel, Meet Minnie and Daisy, Dumbo, Winnie the Pooh, then you are right next to Cosmic Rays, could eat there, then do the people mover, then head across the park to Frontierland....after lunch the little one may even crash for a little nap in the stroller as you make your way across the park. Good luck with your planning!