I have a very simple idea for you David. Instead of going all high tech and such, since you won't need to remove it very often, just call a buddy over (me) and we take her off! Nothing simpler than that, unless you wanna make nice with your neighbors! Lol that is what we had to do when we moved the 180 remember. Lol David, Neighbor, my wife and I had to move it, empty from upstairs to downstairs! After 2 or 3 months of asking for help, this is what I got.
Sometimes the best option is the easiest option.
Another idea I have is this. Hang the leds into the canopy all in one. Meaning the canopy and lights are one. Have a little chain hoist and rollers on the ceiling. Just have to unplugg the lights and push it out of the way, kind of like an auto plant. Hope to see the tank soon.