Ninab, I have a friend who started with the 9" Juki set up. She learned a lot from using it, including that she would have preferred a larger throated machine. After a couple of years using it, she bought a used Innova 18 inch machine.
If you have the space for a larger machine, at least look into a used set up with larger throat. Also, Grace has a 15 inch throat/frame (Q'nique) set up that might work weil for you and not be much more than your price range.