I have a vanity with a single sink that is off center. I have a round mirror that I want to use, but should I install the light and mirror over the sink, or center both over the vanity?? Aesthetically, it would make sense to center over the vanity, but then you would only be able to see half your face when you're washing your hands because the mirror is not big enough. I could go buy a bigger rectangular mirror to cover the entire vanity area, but I really like the round one. Anyone have any suggestions??