The other advice you have been given is all good, but I have a suggestion for a slight change in your lens selection. I have the D7100 and find that the inexpensive 50mm f/1.8 G lens is pretty good for portraits. Unless you need the wider FOV of the 35 mm for group shots, the 50mm might be a better bet. The 85 mm f/1.8 G is a good lens, but it is about twice the price of the 50mm and is more appropriate as a portrait lens on FX. My other suggestion would be to wait on the 70-300 until you have spent time with the D7100 and your other two lenses (unless you can get a good deal on a combination of camera and lenses that reduce the cost of the 70-300).