How about a headband you can mount a high powered LED flashlight to.
That way you could go as bright as you want as long as it fits in the mount.
If the flashlight dies just mount up another.
I have seen ones where you van mount an angled or straight style into.
This Fenix model looks pretty sweet:
http://www.fenixlight.com/viewnproduct.asp?id=38
Unless you dont like the light mounted to the side.
You could probably turn it 90 degrees and mount an angled model toward the front.
Good Luck
That way you could go as bright as you want as long as it fits in the mount.
If the flashlight dies just mount up another.
I have seen ones where you van mount an angled or straight style into.
This Fenix model looks pretty sweet:
http://www.fenixlight.com/viewnproduct.asp?id=38
Unless you dont like the light mounted to the side.
You could probably turn it 90 degrees and mount an angled model toward the front.
Good Luck