mushroom

i am thinking about doing some night fs camera work and was wondering if a very powerful toch (1.5 million candela) strapped to the top of my helmet would do the trick. i was also wondering at what point exactly does one switch the camera on.and where do to point it on climb out. exit will be from a porter from the standard camera man position.what would work best as far as lighting is concerned? do i switch the light off for landing or leave it on as my night vision is bound to be shot?[:)