I am going during the Holidays when the parks are predicted to have a crowd level of 9 and 10. Is there a list somewhere of recommended FPs per park? My general strategy is to go early, leave and take a break, then come back in the evening when crowds have thinned out. I’m planning on making FPs for early in the day.
If you take a look at the pre-made TPs, they have recommended FPP reservations. So, if your plans are close to one of them then use the recommendations for that plan.
Otherwise, FPP recommendations really come down to what attractions you want to do. The Optimizer can help out here - make your own TP and see what it suggests.