Absolutely gorgeous. I agree, with Penni, though, I wouldn't want to wait that long either. They probably won't even like the same stuff by then. Maybe you could change your mind and make it their 16th birthday since the oldest is 15. Whatever you do, don't store it in plastic. Don't know why, but something in it makes the fabric deteriorate. Store it in a pillowcase of something of the sort. Got that tip from a long time quilter who found out the hard way. The quilts that I don't have hanging up or on my quilt rack are in pillow cases in a cedar chest.
I don't think a scrappy quilt is all that strange given why you are doing it. It's always about the sentiment/history and story behind the quilt. Everybody does things differently and that's why this Board is so informative and so much fun. Let us know what you do.