I have done queen and double size quilts on my Viking Sapphire. I am getting ready to quilt a king size on it. It may take a little bit of extra handling but I think it will be manageable. I quilt on a office sized desk and open the top drawer to hold a lot of the quilt's weight while FMQ. I find it really helps to have the extra weight draped over something. An ironing board also works great to hold the extra weight. Good luck!