I'd like the blocks to be 8.5", so I'm guessing the squares will be 5" each, and I want to make it big enough to be a large throw. My friend is about 5'6" tall, but is a big person. I want her to be able to cover herself comfortably, which is why I was thinking of a twin instead of a throw. But, a large throw would be ok, too. Hope this makes sense. Thanks for your assistance!