Got my hands on a 55 gallon (48" long, 13" wide, 18" deep empty) tank. I am in the process of getting everything together but am having trouble with lighting. I want Fish, live rock, softies, and maybe some LPS later down the road. For me a hang on the back of the tank light would be best because of where the stand is located. I am also not trying to break the bank. I know this is one of the most important parts of the tank. Any suggestions?