fireworkslover,
I love your OBW :thumbup: :!: I just bought 13.5 yards of fabric today for one. I have made a stack n wack but like the looks of OBW much better. Would you please post pictures of your other OBW's you have made and also the fabric before it was cut. That is fun to see.
As far as what pattern to use, well I wouldn't want to see the quilting on it. So anything "blendy" is what I would do.