Welcome to NR kenne. Give your needs and budget, my recommendation for you would be: the Nikon D600 FF body only and 85mm 1.8G. If you need 1.4 then the 85 1.4 is amazing, but may be out of your budget. If you still need 1.4 and cost is an issue then 50 1.4 is the best bang or buck and does a great job. In all honestly. you cannot go wrong with any of these lenses.
If fund is not an issue then the other two lenses that I would recommend for your over all needs would be: 24-70 2.8 (my favorite lens) and the 105 2.8 Micro (the VR is nice but not really needed for portraits...use a tripod).
I, like Eric and msmoto, have the D4 and all the goodies that bjrichus would like to own (:P). With that said, if I had to pick a lens for a portrait shoot and could only take one lens, it would be my 85 1.8G. Why? Here are the reasons: 1) weight and side. Being able to move fast and have a setup that allow for this is priceless. 2) Prime lens are ideal for portrait photography. 3) Fast aperture: 1.8. 4) Zoom lenses, though nice for many types of photography, have a tendency to make a photographer lazy in taking a shot. Instead use your feet...move around your subject and get creative. This process will make you a better photographer and enhance your skill in maximizing your gears potential.
Hope this information from my perspective helps in some way.
@Eric...can't wait till we hook-up and I get my hands on your 300 2.8 :) I'm starting to feel the itch for this lens. It is amazing that after you spend over $5000 for a body, one's perspective on expansive gear goes out the door and you some how begin to justify the cost of spending $6000-7000 on a single lens. In short, I'm no longer shocked by the price of a lens I want. It is as if a switch has been turned on and your immune system has completely adapted....it is a very peaceful feeling. :D