Does it seem to cover all 4 pretty good? How do u figure out your best footprint size? Just kind of eye balling it? I do that and use a cheap light reader which I believe reads lumens but not sure I'd have to check. I just use that to get an idea of how much light they are getting. Not the greatest but has worked descent so far? Lol I think I under estimate my spread because I'm using the wrong type of meter lol and we'll I mostly go by how bright it looks and where the manufacturers guidelines are lol