Pam, one of the things I did to make the quilting easier, and I think your frame will do this, is do really tilt it so you can sit up straighter. I'm prone to back problems, but this helped me immensely. I didn't have as nice of a frame as yours, mine is home-made, but DH helped me to hang the back of the frame from the ceiling, and then I propped the front of the frame (closest to me) on the stands. So, I had probably a 45 degree angle.
I had to do some creative lighting to make sure the lights shined in the right places, but it worked like a charm. I would show you a pic but I don't have a quilt in the frame right now.