I am about to weld up a 48" x 24" x 32? (high) steel frame to hold a 125 gallon tank. I plan to use 1"x2"x0.125" square tubing, no middle brace in front, three cross braces on top, and large gussets to prevent twisting. Will the heavy square tubing be strong enough to prevent sagging in the center, or this much sturdier than needed?