FYI with that much light you're gonna have a really tough time. What is your substrate? I made the mistake of not listening to people on theplantedtank and ordered a 4x54W light for my 75 gallon planted tank. I really wish I checked back on that thread before ordering because everyone said that based on me not using CO2 and having play sand, that I WAY overdid it. I followed their advice after that, and I've only been running two of the four bulbs the entire time and for only 4.5 hours a day and I still have pretty bad hair algae. That is with dosing ferts in the water column, Flourish Excel, and using root tabs as well.
Plants are much harder to keep in my experience, and the key is definitely having the right balance and not just being like "OMG OMG MUST HAVE 3 WPG OMG OMG." I learned that the hard way. If you aren't dosing ferts, using CO2, and don't have a substrate conducive to growing plants (AKA NOT SAND)!, I'd tone the light down tremendously. 1WPG would be better. Your plants will grow slowly, however algae won't be such an issue. Even simple things you wouldn't think of readily can cause problems -- for example, planted tanks with no CO2 systems tend to do worse with HOB filters or bubblers -- that's because the excess surface agitation created by HOBs and bubblers allows the CO2 that created by your fish (or dosed by you via Flourish) tends to gas off.
I'm basing a lot of this on the notion that you have sand substrate and aren't dosing or giving root tabs, etc., but generally speaking, an excess of nutrients in the absence of CO2 + lots of light = algae bloom.
Sorry to scare you if I did, but I'd recommend doing a LOT of research based on what you're looking to accomplish. It's hard to kill a fish, but my lord is it easy to cause plant genocide or an algae epidemic if you don't know what you're doing.
