Sounds like a good idea to me too, Lori. One note of caution--don't cut your drywall too big. It does tend to sag so the smaller panel, the better. My guess is that 4 x 4 feet is about the maximum. And I think that I would also paint both sides with Zinsser B-I-N before I painted the final color on one side. This will help seal the drywall from moisture.