I just did my first quilt on a rented LA, and it was almost queen size. It took my 4 hours and looked terrible. My advise is to start on a small quilt so that you don't feel overwhelmed, and can practice. Our shop has charity quilts that you can practice on. I wish I had done that first. In fact it's my plan to do that at least a couple of times before I do another one for me. They are smaller than lap size, and all I would have to pay for is the rental and thread. Well worth it for that learning curve.