It all depends on the plants you want and how long your light duration will be. There are some plant people on here that know better then I do. They will need a bit more info though. Like they kinds (names) of the plants, substrate, and the light type as in the K rating. Example, 2300K or 6500K is very common for CFL's. As far as the CFL's go the 13 or 26 watt would probably be plenty, those big 60W might be a little extreme. Are you talking REAL watts or equivalent watts. If equivalent watts then you are pretty safe.