Personally I would not use any batting with a denim quilt. I have made 3 and did not use batting in any, because of the weight of the denim. I used light weight chambray for the backing on the pineapple pattern one and also on the jelly roll pattern quilt cut 2 1/2 " strips and made it like a jelly roll quilt and I used flannel on the raggedy square one. Advise make sure your denim is all the same don't try and mix stretch denim with regular denim, it doesn't work, I know because I tried and had to redo blocks. The raggedy square would be great for a dorm quilt, but see if you can find the special scissors for cutting raggedy squares, the cutting would be much easier to do ad easier on your hands. Good luck. Welcome to the board.