While it would still probably be illegal, having a copy printed for yourself probably would fly under Lucasfilm's or Hasbro's radar.
Setting up a permanent Cafepress shop to sell your photonovel would probably be a bad idea.
If you really believe in your work, you should probably submit it to an agent, Toyfare, or to a press that already has a Star Wars license.
Also, keep in mind that the dpi image resolution for professional printing is much higher than for a monitor...What looks good on your screen might not look so hot if professionally printed.