In my toy box which is 50x50 I have 8 8' flour strips, Four are mounted to the side walls about at the 11' level. Have 4 in the middle hanging down on chain at same 11' level. There is a fixture called a low bay that can be either HPS, MV, or MHL. They can put out a lot of light but I do not like how long it takes for them to get bright & if the power glitches you will be in the dark until they restart. Location of lights is important. The more you have the less chance you will have for shadows & dark spots.