I think either would be fine depending on what you want to do and agree with all the suggestions so far.
How do you plan to finish it, tied or quilted? That would be part of my decision making process. I would not want to try and quilt the fleece I don't think but have never done it.
How warm and heavy do you want it to be? If going to be used in a local that has cold weather additional batting layer will also add warmth. If in a warmer climate you may not want to add the batting.