These blocks are light, lacy and delicate looking. To continue that theme, I think a simple binding would work well. Try auditioning different colors along the edge of the quilt. A light colored floral fabric containing most of your thread colors may also work.
For the feather stitch on the seams, lighter thread may work better than darker. Those baskets are absolutely beautiful and I would keep the emphasis on those. I'm looking forward to seeing your finished quilt.