I just sold some plants to a guy (big bunch of blyxa i wrecken it ended up being about a $1 a plant lol, rotala, star grass, pearl weed, ludwigia super red, swords, val and a few other bits and pieces. ) I tried and mostly succeeded at keeping him away from the plants that need co2/higher light.
This guy is planting out a custom built tank 16 ft long, 6 ft tall, and around 5 ft deep. About a 3,400 gallon tank. He had a custom light built which cost him around $8K, 16 ft long, 3 ft wide which he says has the power of a chihiros rgb light.
Never mind the other dimensions, I think a 6ft tall tank would be a little challenging!