Circle Quilt

My next project is a circle quilt.  The pictures will explain but I have to decide if I want to just make a simple circle quilt or to make some adjustments to the circles.

This is what I am currently doing, sewing the circles onto the squares:

The following is the two designs I am looking at:

Not sure which way I will use until I get all the circles sewn onto the blocks, and get them up on my design wall.  Feel free to comment on your thoughts.  I am always open to suggestions, oh and by the way those two designs are not my fabrics.