WOW! that is a nice unit
I'll have to consider that with the cycloptics, then... you Can get their hood wich has only 2% light loss in a remote fixture, also...
btw, DO you use other lighting in your flower stage?
the mogul based bulb was part of a kit that i bought: bulb and ballast for $200. both Philips. if you go to the cycloptics website, they basically say hang it up permanently on your ceiling, make sure your walls are as reflective as possible and let the light do the rest.
you can get the reflector separate but it's almost $300 for it. for another 150, you get bulb and ballast too. so better deal.
i have a 2 ft T5 UVB bulb that i use in flower too. helps with the trichs/ more frost. will burn your eyes, skin and plants if not careful though.