I agree, piece it. What I generally do is to lay out the top then the backing on top. I fold this way, that way and the other way until I figure out which way it needs to be cut. When I get the folded piece figured out, I leave it all laid out as is, then grab the scissors and start cutting/slicing/ripping. Then lay it out the way I think it's supposed to go and hope for the best. Usually works with only one seam. That said, I first figure out sq. in. of fabric needed, convert to yards, add a bit and then buy and do as above.