IMO if you compare the 2 pics he give you moore of the ancient feel with the black sand IMO. Also what size is your tank/how many pounds of sand are in the tank?
Once the get bigger the plants will be more heavy duty. Jungle vals and swords will be fine with them. Myro, crypts and cabombas, not so much. The more plants you have the better oxygen level you have as well as clear water.