With your trip nearly here (yea!), I'm going to suggest a website that provides you with daily detailed itineraries that are suited just for your travel party: www.touringplans.com. It is a well-researched website that is brought to you by the fine folks behind the
Unofficial Guide to Walt Disney World. It does have a nominal fee, but I really think it is well worth it to help make the most of your days at WDW.
Aside from that, you want to take a look at the Parks Calendar by clicking
here. Since my family is a morning family, we like to visit parks that have Extra Magic Hours in the morning then by late morning/lunch hop over to another park to avoid the crowds. We avoid Extra Magic Hours in the evenings. If your family would rather get some extra sleep, I would pick parks that don't have Extra Magic Hours. This should help to get your "which park on which day" determined.
If you don't have table service reservations yet, you want to make those as well to make the most of your dining plan if you have the Disney Dining Plan. The places you make your reservations may also determine how you plan your days. Click
here for information on the restaurants and to make online reservations.
Please let me or the moms know if we can help you further!
PS One of our own Disney moms has a child with autism, and
here is some advice she has for visiting WDW.