Ladyrags, I think with the 8" outer border you will need at least one or two inner borders. If there is a way you can put your options on a design wall and "live" with it for a couple of weeks, I think the quilt will tell you what it needs. Many times I go to my quilt books and see what has worked on similar quilts. Remember, though, there are no quilt police, and it's your quilt.