The 8020 is 4.5 inches wide, it weights around 30lbs. I used two of their floor mount brackets directly into a stud with 4 more 150 lbs wall anchors. A little paranoid sure, but I don't worry about it falling.Very nice build… I have something similar in the works and was thinking of almost an exact copy of how you hung the lights. The only difference I was considering is using a hinge to mount the bar to the wall so pulling the cable up would “fold” the whole thing up for maintenance. Nice to see that a concept I was thinking of looks great on your tank.
With the kessils I hung them high enough that they do not interfere for maintenance. If you can skip the hinge I would but if you are mounting radions 8 inches of the water it would probably be really helpful!