I think a lot depends on how many times you’ve been to WDW - the more often you go, the more laid-back you become. But this is your first trip in a long while and you want to make it memorable for both of you, without dropping from exhaustion.
My best suggestion is to become relatively familiar with the parks and their attractions before the trip. The Unofficial Guide to WDW is the best book around - I really suggest you get a copy and start to read it now. At least read about the attractions in each park. Learn about fastpass and how to use it. Ask lots of questions here. There hasn’t been a question asked here that hasn’t been answered. With it being just the two of you, I would suggest that you concentrate on what is more exciting to your dd (ie. the Magic Kingdom) and less on attractions like The World Showcase at Epcot. Not that the WS isn’t great, but save most of it for future trips.
Write out a list of “must-sees” for the two of you. Your plan to be there at rope-drop is good. Are you staying on-site? If so, become familiar with the Early and Late Magic Hours in the various parks.
You’re going at a quieter time, so you might be very surprised and find that you’ll be able to do most attractions with a minimal wait (20 minutes or less). And remember - try not to do it all - it’s impossible. Don’t race around so madly that you leave something you’re really enjoying, just to make sure you get to the next attraction.
Plan, relax and have fun.