What a fantastic space! You've got room to spread out forever! Don't worry about the decorating now--a quilting room is always kind of a work in progress. As you go along you'll be able to figure out how you want to set things up, and once you do, you'll probably have a few "ah-ha" moments and change it all around again! Once things have found where they belong, then you can worry about decorating. In the meantime, enjoy your fabulous quilting space--what freedom!