I'm wanting to do a OBW (One Block Wonder). I saw this fabric on One Thousand Bolts and have it in my cart. Do you think this would work for this quilt? I don't know what the repeat is. I would want to make a large throw. This picture is a 6" representative of the fabric. What do you all think? And, if so, how many yards of fabric do you think I should purchase? Thanks for your input!