I would use a clip on flash lite for a head light
lots of led/rechargeable flashlites out there now
or maybe a helmet mount so it goes where you look
and an led rear red lite
I used to use leglights strap on
as the motion of the lite on your leg is more noticeable then a fixed lite
here is one version
http://www.amazon.com/Planet-Bike-Multi-Use-Bicycle-Safety/dp/B000AO7JP0
wheel lites look cool also