This does not include the background for the center of the stars, as these are sampler blocks, that have not been announced yet, there is absolutely no way to know how much is needed for those. So I would definitely suggest scrappy for those. Definitely.
Now on to backing fabric. This will also need 6 yards. The finished quilt will about 90 x 90 depending on what you decide for borders.
Please let me know if you have any other questions. I'm sorry to have left you all hanging for so long, the last couple of weeks have been lots of fun for me, but without lots of time for sewing. Thankfully, and three day weekend should help all that and give me a chance to get a little bit done.