It is so frustrating to be on a roll to find out Oooooopppps. To avoid hassles like that i do take backing and thread into consideration. But if you know your machine you can make it work. You didnt really neation why it looks terrible in the back. Is it because the thread is different? If you change the bobbin to dark thread you might end up with littlewhite dots in the stitch and you will need to adjust your tension. I always make a sample quilt piece with the same fabric and do a practice quilt. Try that and maybe try changing it to a hue of gray.