[Nerull]

Hmm...Demolitions is a good idea, considering it is a class skill (I was originally considering Security, but I can give this to HK-47, and he can use those powerful droid upgrades to make the cross-class skill really count).

Definitely max out Dual Wielding, Melee, and Lightsabers. Also consider Conditioning to boost saving throws (since I can't use force resistance due to armor), Flurry (since I can't use force speed, for the same reason), and Implants and/or Toughness (the former for the good implants in the game, the latter because it really fits the character). I get a good amount of feats, so I should be okay in that regard.

Powers would definitely be the Wound/Choke/Kill line (I love Kill), Fear/Horror/Insanity (also very useful), and possibly Force Push/Whirlwind/Wave. Though I can use Slow and Affliction, Plague has an armor restriction, so this is not as useful as other powers. However, I can't use Drain Life/Death Field, so should I take the Cure/Heal line (despite the 150% of cost to use)? I might just get the Environmental Bastion Armor, but if not then Improved Energy Resistance can work as well.