I have a hub dynamo, wired light set, on a couple bikes , 1_ 26" , 1_ 406 20".

For commuting I like the Jump on it and Go, consistant reliability.

[ without a stand light the dimming at low speed when I used the Halogen
bulb headlight, without stand-light left me in the dark . 'till I got going again.



But you have a Off Road oriented Mountain Bike, doesn't look like its for a commuting App.

. Night time single track?

High Watt external battery light? ... and a helmet light..?


FWIW, I have a suspension fork on my Koga trekking bike ( short travel )

there is a mounting hole in the arch, it's used for the Mudguard mount and the headlight mount.

which is B&M's nylon one ..


..

theres a removable handlebar light with a mid cord plug , wired down to the hub dynamo .

Planet Bike on this side of the pond.. that lets you pocket it
while the bike is parked and the wheels etc are chained up for security..
http://ecom1.planetbike.com/3048.html

you can always use another battery light as well, on the same bike.

looks like "Smart Lunar" is the brand name in UK for the same, planet bike, like, things.

http://www.wiggle.com/smart-lunar-10-lux-front-light/


Other than rebuilding the front wheel around one of Shimano's Dynamo - Disc combination hubs ,

the Danish made Reelight light scheme http://www.reelight.com/ fits a magnet,or 2 or more,
to the spokes and uses induction in the sensor, to make a pulse of electricity,


and at the higher price options has a capacitor to steady the pulses as the magnet passes the sensor.

and runs a wire up to the headlight ..