Joseph,
I think I will have to side with Stu and Ms Van Son on this one.I feel 160V would be a clear breach of the rules (Personaly I wouldnt go near it in the arena). You will defenatly do better with some ultra bright LEDs.Try Maplin and/or RS Components, and of course, with LEDs not only will you save a serious amount of both battery life and weight you also have a choice of colours!
Geoff,
Team Scorpion