Awesome! Definitely double up on the leg supports, I basically did the same thing you did for the legs but placed another set of 2x4 that run from the very top to the floor right behind the legs you have now, screwed together. The only problem I found is that it eats up some space on the inside of my stand for equipment. As far as glass baffles, if you properly break in the cutting tool and cut just a tad smaller that the inside width of the sump, cutting it yourself is pretty easy. 1/4" thick glass is probably ALOT easier to work with than what I used which was 3/32" thick. Super thin. Good luck buddy!