I have a Nikon D7200, a couple of DX lenses, and the FX 24-70 2.8 VRII. Later this year I want to upgrade to a full frame camera. The D850 almost seems like more camera than I need. It is expensive and, to make best use of its features, I might have to buy new batteries and cards, etc. as well. For the same money as an D850 body, I could get a D810 and a very good kit zoom lens. But there is the nagging fear that I might regret not going for the larger upgrade farther down the line, and I already do have a fine FX lens and my DX 35mm lens could work well on it too. I know this isn't a psychology support group, but any help you can give me in making this decision would be helpful.