Oh Yes ! a walking foot will make a big difference. One thing you will find( even with a walking foot) as the weight pulls in the quilt toward you if the bulk is in your lap , or pull away as the weight falls behind the stitch length will lengthen or shorten depending on which way the weight is going. If you have a large table move your sewing machine to it so the quilt weight can be supported. Some use an ironing board or other tables, moved temporarily around the machine to help support the weight.