HERE is the crowd calendar from easywdw with explanations for what days/weeks are the best for crowds.
Tuesday and Thursdays will be the least crowded of the party nights. I think once will be plenty of time to enjoy everything. You can enter the park as early as 4:00pm (some are saying 3:45pm) with your party ticket. You can also schedule FP+ with your party tickets for the hours of 4:00 - 7:00pm.[/QUOTE . Thank you so much for the information