I'd do early mornings the first 3 days, so you can get a lot in right away. I find we usually start experiencing burnout about 4 days in. Then you can schedule some later arrivals. On the last day, you might want to go back to Rope Dropping your favorite park.
Do you have Base tickets or Park Hoppers? For later arrivals, you're probably not going to want to park hop. I'd show up early afternoon, after lunch, in order to save money by eating off property. Have your 3 FP+s scheduled for the afternoon hours, when waits are longest. During the time between FP+s, hit some second-tier attractions/shows.
If your 7-year-old can handle it, I'd stay late a couple of times. Either catch the nighttime fireworks or take advantage of the lower wait times for the attractions then. I'd especially do this at MK, which is always great at night, and AK, so you can see Pandora.