Read the suggestions on the board, they're GREAT!!!
I always start out when the park opens. Do the big headliners first. Short lines, cooler weather.
Remember you're at a resort too and take advantage of the pool and amenities of your motel.
You're not going to be able to do everything, so I agree it's a good idea to get your daughter the book and then let her choose. Make a plan and review the park maps a bit, just to get used to where you might be going.
MOST IMPORTANT---Just remember to be there and just stop and take in the atmosphere. I remember the first time we went and I saw the castle, I was so excited. And I was 30 years old!!! One more thing---go with no expectations. I know we here are "Disney Fanatics" and it sometimes sounds too good to be true. This happened recently to me with Cirque du Soliel, it was built up so much that I was expecting too much and even though it was a WONDERFUL show, I was dissappointed, because I expected more. So make use of the suggestions, but don't expect to be "blown away". It's best to come to your own conclusions about Disney!!!