I'd shell out for a mask that fits under a hood. Like the Sith from the Deceived trailer. The robes wouldn't hurt either. From between 1:40-1:50, the moment when the shuttle door opens. In fact the entire outfit they wear, with the epic metal armour and black robes looks great. It's nice and understated.

I always considered the light side warrior someone who channels his emotions and does what is best for the empire. Where a dark side warrior is ruled by his emotions and does what is best for himself.

I know how you feel man.