You didn't mention if your going to quilt it on a longarm or not, but here is what I do when a wide backing needs de-wrinkled. Load it on the first roller, then I spread it up & over the take up rollers & down behind the table & as I roll the backing up I spray each section with Best Press & iron it holding my Quilter's Cut & Press under the fabric. I then roll up that section & move to the next. It sure beats trying to iron it on my ironing board.