As a user of the D800 cameras, I second Bjørn's reasoning. A D600 would be a better match, image quality-wise. The D700, much loved as it is/was, is a product of the 2007 imaging tech of the Nikon D3. The D600 dates from 2012. They made significant improvements in that time period.
Also, if you wish to make a larger prints, 24Mpix will be visibly nicer than 12Mpix.