Is there any general rule when calculating the # of recessed can lights it will take to provide "general illumination"? I have a 28'x15' living room with 9' ceilings, seems to me that in order to get ample light I am going to need so many cans (6" 65W max bulb) that the ceiling will look cluttered. I also have issues that are not going to allow for consistent spacing, any thoughts? Thanks