I will be taking some engagement photos at the beach later this week during sunset. I'm curious which two lenses people would use for such a shoot. I plan on using the 28-70mm, f2.8 on my D2X for most of the shots. I'm not sure which lens to put on the second body (D200). It's a toss up between the 85mm, f1.4, 180mm, f2.8, and the 70-200mm, f2.8VR. Can anyone give me a suggestion and a rationale for the suggestion? I'm picking only two lenses because I am reluctant to start changing lenses at the beach which is windy this time of year. Thanks!