I am fairly new to photography, I am going to get a D7100, would I be wise to get the kit lens with it, it is $400.00 extra. If not please givve advice on which would be a good everyday/ walk around lens. I have a Sigma 70-200 2.8, and a Nikon 40mm. Macro. Also have a 55-300. So I guess I would like direction on what is a good, all around (if such a thing exists) lens.