Howdy Lori!!
You are going to love
Bay Lake Tower at Disney's Contemporary Resort!! The added plus of the theme park view is fabulous!!
Do you have kiddos that will be travelling with you? When we are at Bay Lake, I prefer the 5th floor because the Sky Way that connects Bay Lake Tower to the Contemporary is off of floor 5. Floor 5 is not needed but it is helpful. We typically travel with a double stroller so depending on where we are going, we can sometimes skip the elevators and save a bit of time.
We also like the higher floors for the views.
All of the above being said, we have never had a view that we didn't enjoy and given that you have a theme parks view, I know you will love your villa regardless of the floor you are on.
I'm so glad you are taking advantage of on-line check-in. It's fabulous and makes check-in at the resort so efficient.
Thanks so much for your question and please let me know if you need any further information as you plan your Walt Disney World Resort vacation. Have a magical day!