Cape looks right to me, but best bet is to contact Oscar as his focus is vader. I will get his username and put it in here in a second.
Here is a thread with a similar cape: http://www.imperialgunneryforum.com/t1066-pbp-vader-do-they-exist-or-not
and the pic of the cape in that thread that resembles yours:
Not sure about the saber, doesn't really resemble a ledy for me but might be as a lot of pbp imported ledy stuff. The main defining points of a ledy are the thicker tip and a different plastic that is almost waxy and translucent to me (others may describe it differently)
Here is the saber pic overall showing different ones:
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Bryan
I have caviar dreams and McDonald's pockets