Is that the Dymax IQ3 (or 5)? The light is fine for a little while but fades after a few months, I would recommend a 10 watt LED floodlight from eBay, make sure it is suspended high enough over the tank so that the light is not too intense. For substrate, I would go either an aquasoil, ADA is good, there are some others but they don't seem to be as popular and successful as the ADA, they still work though, I think the problem is they break down faster than the ADA. I usually use topsoil capped by zeolite, it produces it's own CO2 and it is chock full of nutrients.