There is an adapter coming up to do AF of NIkon glass on E mount cams. I would still dump the Nikon stuff for Sony.
At a recent wedding, the pros had canon Gera with a sigma ART 35, some canon fast zooms. One had a D4s with a VR zoom. I used an A7s with a 40/1.7(yashinon) and APOSummicron 75/2. The younger pros were total camera geeks and brought their own A7s one day and were just amazed with the manual focus glass on the A7s.