I need some input in just how heavy a custom hood can be (including lights). I have a 110g Oceanic that I would like to build a hood for, primarily, to house a pair of Viparspectra 135w. The lights themselves are surprisingly heavy. I would be using dimensional pine and as little hardware as possible. How much weight is too much? The tank itself is a beast; 1/2” thick glass, one of those monster glass crossbraces. It is rimmed and the frame for the hood would sit on all four sides of the rim. Any suggestions?