Hi, Cassandra!
You are going to be amazed by the views of the Magic Kingdom from the
Contemporary rooms that have a theme park view! I felt like a Disney commercial as we fell asleep watching Cinderella Castle from our cozy beds when my family stayed there!
The higher your room, the better the view is going to get. We stayed on the 6th floor, and while this is on the "lower" end of the options, we still had a great view each night of Wishes! Regardless of your room, as long as you are in the Tower on the side facing the Magic Kingdom, your views will be breathtaking. The advantage of a higher room (around the 9th floor or higher would be nice!) will be a bit less road noise when you are on your balcony (the parking lot is right in front of the resort) and while I never found this to be a problem, some say they can hear all the celebrating at Chef Mickey's on the 4th floor.
Enjoy your stay at this super resort. My family has been to Disney dozens of times, but our stay in a Tower Room at the Contemporary is a vacation that really left an impression on us all! I hope you make as many magical memories as we did, ENJOY!