We'll be there the 27-30, so I feel you. It's a tough week since early entry is every day in both parks. The wisdom I've gotten from others is to go the the park that doesn't normally have early entry on that day.
#1 tip is going to be to start your day early, no matter which park you go to. Rest in the afternoon when crowds are at their peak, then jump back in the evening for entertainment and some attractions as the crowds begin to thin.
It would be helpful to know where your priorities are. Children? What ages/thrill tolerances? I can share my plan later on if you like.
Andre