I know I may be too crazy, but I would suggest D700 or D3 body. For light weight, D600 for sure but it may not 100% compatible for your old primes.
That D700 is one body I'd hang on to. Does everything I want from cameras; almost as well, does the older D200 I still keep.
Why keep it? I like the focal length (effective) changes it permits from all my Nikkors, old and new.
As I have never printed bigger (on digital) than A3+, there's no problem. Also, with cameras, I do try to crop with what I see. Wish the iPad was as friendly!
ROB