We use a couple of sites to pick which parks we'll be in for which days: Touring Plans and easywdw. If you want to hit the evening parades/fireworks, be sure to figure out which days they're available during your trip, esp. if you don't get parkhoppers. Then we figure out when we'll eat at our preferred restaurants to make ADRs (we do not do table service meals every day; with our young children it is too much sitting/waiting). Closer to the trip, we'll sit down and make a basic plan for each day based on advice from above sites and our personal preferences. We'll include the attractions we want to experience (in order), when we need to obtain fastpasses, any characters we specifically want to meet, where we think we'll eat lunch & dinner, and any shows/parades/other time specific events we want to include. That gives us a framework to refer to as we go, but we're not slaves to the plan, especially after lunch. We set it out ahead of time to make sure we cover everything over the course of the trip. We use
www.tripit.com to organize all our details.
There is a lot of information out there - it can be a little overwhelming, but I think your child(ren)'s age(s) and interests will help guide your planning. You're staying in a great location; there is nothing better than walking "home" from the Magic Kingdom after the fireworks!