I did some double slice table runners with layer cakes - I like all precuts, due to the variety within. You could always mix in a "solid" with the layer cake or do sashing to give you more structure and less busyness. I am also a very organized quilter and using the precuts makes me get out of my comfort zone, which is a good thing! Sometimes, I end up organizing by color when using a precut and that helps. Here is an example with the falling charms pattern - scrappy, yet organized.

Click image for larger version.  Name: IMG_1264.jpg  Views: 102  Size: 150.9 KB  ID: 63737