Aquarius Marinus

I'm planning on using 3 250W Radiums...which apparently makes my choices of ballast very confusing.
As far as reflectors (pendants, in my case) I was initially looking at the LumenBrights, but I was told yesterday by Aquarium Specialty that these do not come with glass shields, and thats a must for me.
So I am now looking at the LumenMax 2s. Does anyone have recommendations here?

As for ballasts, I know that the 250W Radium is only "correctly" driven by an ...

I've been a member here since January but haven't been around much yet. (Senior semester of engineering is kicking my BUTT!)
My name is Aaron, I'm 23 and have been keeping a reef aquarium for about a year, and fresh water aquariums for much longer. Like many, I was inspired by Marc's site a few years ago, and finally got around to setting up a tank last year.
This summer I will be relocating to Cleveland, OH (at least for a while...) and am going to set up a 180 gallon tank. Right ...