Sara,
The truth is that if you are at a park during Extra Magic Hours, you are going to be where the crowds are. Still, I think that if you avoid the morning ones, and use some of the evening ones, you are going to be OK, and still get all that great extra time in the parks. That being said, here are my daily suggestions;
June 24 - Magic Kingdom (See
Wishes)
June 25 - Epcot
June 26 - Animal Kingdom (AM) / Magic Kingdom (PM)
June 27 - Magic Kingdom
June 28 - Hollywood Studios (See
Fantasmic!)
June 29 - Magic Kingdom
June 30 - Hollywood Studios (AM) / Epcot (PM) (See
IllumiNations)
You might notice that I don't really have you park hopping. Not that you shouldn't. It is just that park hopping takes time. So these are the parks you should visit in the morning, and possibly in the evening. But if the mood swings you to want to go somewhere else, then by all means do it. Also, let the Park Hopper feature give you the freedom to schedule your dinners wherever you want.
Let me know if you have any other questions!
Have a magical vacation!