Given your stated preferences of subject matter, there are really 3 lenses you need. A 35mm f/2, a 50mm f/1.4 and an 85mm f/1.8. you probably are lusting after the big fast aperture zooms (16-35mm f/2.8L, 24-70mm f/2.8L, 70-200mm f/2.8L) and/ or faster primes.
But you don't need them to make great photos, and more importantly, you'll get get tired of the weight of lugging them around. The more your energy gets sapped the fewer photos you'll make and the sheer weight and bulk of them will alos reduce how much you'll be able to concentrate on making the ones you do make; the more that happens the more frustrated and disappointed with your photography you'll become.
Great photographers like Henri Cartier-Bresson, David Alan Harvey, Elliot Erwitt, Lee Friedlander, Diane Arbus James Nachtwey carry (carried in the case of Arbus, Winograd and H C-B) very little gear with them for a reason: They want to be able to move freely and respond quickly. You can't do that if you turn yourself in to a camera and lens toting Frankenstein.