I have the following lens: 18-200VR 24- 120 VR 70-200 VR 80-400 VR (just ordered it) There seems to be a lot of overlapping and I don't want extra lenses I won't use much. I try to keep my life as simple as possible. Notice I said try, as I seem unable to stop myself from ordering lenses. Which lens are superfluous? Help, please.