I like Linda's idea.
For some reason, these are hard to sell, even cheap! I had a Pfaff Grand Quilter, basically the same machine, on a Proflex frame. Tons of extras, probably $500 in extras. I listed it on Sew Its For Sale for a mere $800. A nice gal from Idaho drove down and bought it. She was the only one interested. Hard to believe. Then a year or two later I replaced the machine because I missed piecing on it.
If you don't need the money, it might be a better deal for you to keep the machine, toss the frame, and have fun piecing with your Viking. These sew through a lot of layers and you can make awesome purses, totes, sew jeans easily, etc.