What history class should I take?!!?

I am going on to 10th grade and will need to take a history class. I want to take an AP class, either European History or World History. Problem is is that I don't know which one to choose. I need a high GPA each semester (since I want to go to medical school), but I'll will be loaded with hard classes such as Honors Math Analysis, Honors English, AP Biology, Spanish 3, and I will be involved in a sport (cross country and track). I will also have to choose between intro computers and honors chemistry. I'm really worried about how my grades will turn out, so I need to find out whether AP Euro is easier than AP World History. Help!!!