I would add sashing, then a wide border. Solid colored sashing and a wonderful floral print for the borders. Without sashing the quilt will be really small, I would try a darker solid color for the sashing, this will separate the blocks and make them more prominent, without sashing the blocks all run together.
Look at the quilt on your design wall for a while before you decide, don't rush to finish it up, the quilt will tell you what it needs. :thumbup: