Well I plan on getting 4 glass pieces cut for the top. Although I could set the light on top of the tank I wouldn't be able to open it without having to remove the whole fixture first. Plus, I think it would be really hot directly on top of glass.
And I'll be sure to check out that lighting system Grrrit. I will most likely just get one for a good deal on Craigslist.
Planted the tank today! Adding pictures soon!