Hi Victoria!
How great are you to be putting forth so much effort into your children's vacation? As long as you have a few weeks before you travel, I'd highly recommend ordering a complimentary,
Customized Map of the Disney Parks. Clinking the link I provided will allow you to choose all of your favorite attractions, and within a few weeks, a magical surprise will arrive at your door.
In beautiful packaging, you'll find 20" x 14" customized maps of each Disney Park, including "your favorites" and a list of "even more fun" for the attractions or entertainment you may have missed initially. With bright, clear graphics and easy to read navigation tips, the maps will likely become not only helpful but a keepsake of your Walt Disney World vacation.
Another suggestion I can provide is to check out the unofficial site touringplans.com. For a nominal fee, touringplans.com offers actual plans of where to head first, second, and so on to avoid the heaviest crowds. I've found their plans to be essential in making our trips, as you mentioned, "the best trips ever!"
I hope my ideas were helpful, Victoria, and please do visit me again with further questions. I'm happy to help!
Sherri