I guess it's either Maul or Leia that will have to go then. I can't get rid of Darth Vader or Obi-Wan since the two of them were in such an iconic scene together. It's like having cereal without the milk.
This is too easy. Episodes I, II, and III were inept and shat all over a nerd icon of film making. Sell anything to do with those movies and you can start your path away from the darkside.
It's always hard when you have to sell something. If it was me I would probably sell Maul, but it all really comes down to what characters you like the most. Good luck man.