The 24-70mm 2.8, 50mm 1.4, and 35mm 1.4 will all work fine with either a D800 or D800e. I own all three and have used all three with my D800. Which one(s) you pick is very much a personal decision, as you could make photos of people and sites in NYC with just about any lens. How did you like or feel limited by your X100? That'll give you insights into what's a good first lens.
Keep in mind that some of the posts out there are also from people who aren't familiar with how to use the camera, so you can't get too worked up over what you've read. Be sure to give yourself lots of time and patience to learn your tools. I would be a bit hesitant to take on a wedding without significantly more experience under your belt, but I'm glad it went okay.