Really no preference for us. Will your park days be consecutive, July 17-20? If so, the only recommendation I'd have is to avoid MK on a Monday. That's been a long standing rule of thumb is most guests arrive on a weekend and kick off their visit with MK so it can be busy on Mondays. Is it really any busier? I have no idea but we avoid MK on Monday. I would try to do DHS and Epcot earlier in your trip, I don't think AK really makes a difference and maybe end at MK. You could look at park hours as you get closer to the date and take a gander and see if they have EEH any of your days and maybe avoid that park on those days. But in July with no real events going on, I really don't think your park days of the week really matter.