I'm getting ready to sandwich the baby quilt for my niece. I've decided to use sage green flannel for the back and the striped fabric for the binding. I need help deciding about batting. I'm machine quilting it, simple SID. I may be over-thinking this, but I can't decide whether to use a. warm 'n natural batting with the flannel or b. two layers of flannel or c. just one layer of flannel with no batting. I'm most concerned with the technical aspects of making it work (preventing shifting, excessive shrinking, etc...). All the fabric was prewashed before the top was constructed and the flannel was prewashed once also. I'm inexperienced and would really appreciate some input so I don't make a stupid decision at this point!