The 2X36 watt bright kit, or the 1X36 watt bright kit. I think you could probably get by with just the one. JMO. HTH. http://www.ahsupply.com/36-55w.htm
I have 2, 10 watt 6,500 mini compact bulbs, and a 28 watt compact florscent, 50% attinic, and 50% 10,000K bulb.
I have about 5 mushrooms, and thier all doingg good.