If you are doing this on a regular machine, can you maybe stitch about 1/8" from the edge of pink pieces on the pink? I often quilt 1/8" rather than 1/4" for accent. As for all the starts and stops on the crosshatching, I use lock stitches on them and just jump to the beginning of the next start. After I'm all done, I just sit and watch a movie while I clip the jump stitches on the front and back. I'ts going to be a wonderous quilt, can't wait to see it.
Happy stitching