Hi there The set up sounds ok to me a little pricy for used though , I have a set up I purchased from Toronto. New Ushio 10,000k bulbs were only 85 dollars each Canadian plus shipping. The Only problem with buying a used unit is there is no warranty on the ballast and your bulbs might have to be replaced in a few months. I live in a apartment and I can definatly notice a change in my power bill. I am running a duel 175 watt set up with 55 watt pc bulbs. The power bill has gone up by 35 dollars a month, its worth it though my corals a thriving compared to when I was using power compact bulbs.
Here is the web site if you are interested. My ballast came with a 2 year warranty and it was alot cheaper than JL aquatics.
http://www.cooltouchlighting.com/index.asp