Depends on what you are trying to grow. If fish only with LR, then you don't really need that much light. Also, I can't tell from the site whether or not any of their setups will accomodate a 30" long tank, which I believe is the length of your tank. I have an AGA 29 gallon tank (30 inches long) and put a 65 watt (23") PC light retrofit into the AGA light thingy that came with the hood. It was a decent amount of light for the 29 and my LR + fish did fine with this. Again, it kind of depends on what you want to grow in your tank...
Jack