I ended up planning then re-planning, then re-doing the plan again, then driving my family nuts with planning some more, for weeks on end.... because I couldn't get my ADR's and FP to work correctly.
What saved me was buying the Unofficial Guide to Disney World book with the Touring Plans app. This will allow you to make customized touring plans, which include the rides/fast passes, restaurants/snack stops, bathroom breaks, parades, shows, AND allow you to see what your waiting times & walking times will be. They even have a little map of the park in the touring plan, which shows you each stop numbered 1, 2, 3, 4 that your planning to make (if visual works better for you).
The mistakes I made prior to getting this app was that I was planning on a FP's on one end of the park, then my next on the other side of the park, then dinner at a resort, etc. and the math I was doing in my head for walking/transportation/waiting lines were WAY off.
Also, this app tells you how long the rides/parades/shows are... which I would have never thought of... so you can plan on that too.
Another mistake I made prior to getting this app was that I was planning on FP's for rides during times where I wouldn't need one (for example, the waiting times for a lot of the kid rides are only 4-5 minutes in the morning without fast pass). So it allows you to pick FP times that are more useful.
I wish you the best!!!