radquilter, the white 80/20 batt should be good to prevent the light back from shadowing through to the front. I am going to quilt mine too, on my sit down long arm. On mine, only the curved flying geese background really needs custom, beautiful quilting, the rest won't show much quilting. First, I'll stitch in the ditch the entire quilt. then go back and add free motion designs and/or ruler work where appropriate. After some serious practice with extra curved flying geese blocks, I'll do those last. I will purchase a wide back soon so there are no seams on the back to worry about.
Good luck--we can do this!
