I agree to check the batting pkg for quilting distance recommendations. I have 2 in the closet at the moment. One says quilt 2 - 4 inches apart. The other says no more than 5 inches. As per spray basting, try this on a sample piece. I have heard some have issues with poly batting. This may depend on the brand of spray. I have never used it, just pin baste mine. Have fun with your new project