I love all of them, but now I will throw you another suggestion and why. I like 2 & 4, because the eye goes to the center of the quilt and not off the edge. Now for the curve, is it possible to coordinate the colors as they come down and back to the edge, to be blue in one area and gray in the other? Like what you did in picture 3. Just what you needed, another layout. Lol. That is going to be one gorgeous quilt, however you put it together.