I guess the biggest question is what is your climate...do you want a warm quilt...two battings will most likely be warm. You may find that you could get the definition you want with one layer of wool, dream puff or the highest loft quilters dream cotton that they make for long arm use...is that the deluxe? I don't think you will have trouble with the batting getting scrunched if you do a full float of the top with two battings which will allow you to adjust with each roll. I baste the sides as I go(as I advance) which allows the leeway to adjust.I wouldn't use warm and natural in this specific situation as it tends to provide less definition and is a flatter/less lofty batting. you could use a less dense quilting scheme to maintain the loft you are looking for. Very nice job on the top...it's beautiful
