definitely keep it to one floor...if you consider adding retail - pampered chef, tastefully simple, avon - put them on the second floor. I was in a show a few years back that was Saturday and Sunday. Crafters could sign up for one or both days. I was always there both days and had good sales both days. If your local high school students need service hours, consider getting them to volunteer with set up, helping crafters unload and load cars, direct traffic. I LOVE shows that have volunteers to help me lug my stuff! I do like the idea of a bit in the local paper.