You can use the no show mesh ( non fusible). Embroider each block separately. Trim to size adding 1/2 inch seam allowance around the block. Sew the blocks together. Add the batting and backing. Then quilt.
You can also use a sheer fusible on the back of your background fabric.
SITD will leave the batting loose in the block. Are you planning on adding stippling around the red work? Even though the batting may be ok for larger spacing, you may not like the final result.
Try a sample block first.