I would suggest taking the poor damsel back, as he will soon be living in an ammonia/nitrIte sewage pit. These days, cycling a tank with livestock is considered somewhat out of date and unhumane.
That lighting should suffice for a FOWLR
tank. I would suggest replacing the CC with sand. I had the CC and loved it at first, until I found it difficult to clean. You could possibly lessen the stress on the fish, by adding much more cured LR
. Good luck and keep us posted!