Looks GREAT bro, and very ingenious. Only thing you might want to think about changing is the wood cross-members. I would be worried about the high heat from the light drying it out and possibly starting a fire. They sell metal studs too, which can easily be cut to the length you need, would render your reflector a bit lighter(weight wise) and would eliminate the potential of becoming a fire hazard. Other than that, it's awesome. +rep for ya.

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Any posts made by me are purely fictional in nature and therefore should NOT be taken seriously. I do not grow or condone the growing of anything illegal.