I would recommend watching Wishes, and then catching the second SpectroMagic. If you wanted to do some shoping, make sure that you don't wait till the last moment to do so, as many of the shops in the back of the park close early, forcing the shops on Main Street to become overly crowded. If you purchase stuff during the day, you can always send it to the front of the park, or back to your resort, if it's on Disney property.
Betsy