These re-sizing exercises are interesting, n'est pas? I have also played with up and down resing various of the files and when I get back from the trip I start tomorrow, in ten days or so, I will make some prints. For me, the main thing is the elasticity of the files rather than the sheer resolution, and the ability of the systems (being lens+camera) to get images sharp to the edges. This has been non-trivial on the D800 cameras and as you can see from that shot taken with the loaner 24-120, it looks as if the problem I thought was with my 24-120 might actually be with the body, though there's no RHS weakness with any of my other lenses.
Been playing some more briefly today and I am starting to get quite excited by the files and the lens but I must say that the body feels like a P&S rather than a pro-grade instrument. Startup is laggy and there's a sound like R2D2 scratching his @rse for about a second. And I think that focus is a bit slow even in good light. I also keep holding the bloody thing up to my eye. Why don't manufacturers release vital accessories such as EVFs at the same time as the bodies!?
So I'm off somewhere bright and sunny. Expect lots of sea and sand shots, possibly the odd palm tree!