I am looking to make a cheap, lightweight underquilt for use in the summer and possibly even early fall/late spring use(in SC). My idea was to layer some 1.1 sil-nylon outside of a layer of IX which would be outside a layer of fleece. I thought that the fleece would absorb any condensation that formed without decreasing the warmth much and the IX would windproof the fleece and add extra insulation. Does this seem to make sense to everyone else? When constructing the quilt would I be fine just sewing together the edges of the quilt or should I sew any seams across the middle to keep the layers from shifting any? Thanks