I did ask him to drop the active Force powers. I can't treat my players differently, so I'm going to have to ask you to do the same.  You can still pick them up later.  

If you want to have Force Lightning, you can arrange to have it taught to your character by the Sith.  I think a good starting point would be that he comes to work for Siador along with his sister/whatever they are, possibly under false pretenses.  He could be taken up by the Sith, but again, be false in his dealings with them and intend to betray them.  When the Jedi on the planet are openly revealed, he switches sides and joins them.  

I mean for a lot of this on Korriban to happen fairly quickly, it's going to act as a sort of base for the rest of the character interactions.  Kind of a prologue.