Hope you have a easier and cheaper path than i did,i was nearly two years swapping and changing unwilling to admit the gear was too heavy,one way i could have got around it and stayed with Nikon DX was a D7200 the new 300mm pf and 1.4 converter,ime sure i would have been unhappy though with it not being a Zoom.
The other thing i considered was using my 70-300 on the D7200 and carrying my V2 with FT-1 for when i wanted more reach,this would have given the 70-300 a FOV = to 189-810mm and the V2 has a great sensor.