Those are real weird dimensions IMO, but pretty cool none the less. Lots of height, where most of us prefer footprint. Either way, lots of options. Angel fish maybe?
Wow that is deep. My 120G is 26" tall, and it's a good reach to the bottom. At 40", you may need to buy scuba gear and get right inside! If you are planting, it will offer some unique challenges, like getting light to the bottom. Very interested to see how this develops.