Unless you particularly want it to be super warm, I'd leave the batting out. Fleece is a nice backing without the weight involved but it is warm. Then, too, without batting there is no possibility that a center "layer" can shift and, if you like the idea, it would be acceptable to simply tie this quilt. If you want quilting, it won't require the standard width between quilting lines. Fleece makes for a nice backing with sometimes more possibilities for finishing than the traditional quilt!