Very nice tank very nice find. One thing about glass as long as is isent cracked its almost always looks ready to display.
Maybe you can keep the 50 in the basement as well, just leave it empty on its stand in the basement for a while until the wife gets used to it, then leave it empty but filled with water in the same spot for a while, before you know it will will be full of fish and not even be noticed LOL. That's how I got away with it.