This is late (I do not get to sit down at a computer as often) but if you are simply after resolution and hate shadows in your images, I would suggest as some others have done - which is something like the A7R. Purely as a 'digital back' for whatever lenses you wish to use.
As for lenses, I would strongly suggest a couple of Canon's TS lenses before the Nikon's, simply because many of Nikon's lenses of recent years rely a good deal on in-camera corrections, which has allowed Nikon to slack on physical IQ in the lenses. This means that when not used on a Nikon body the lenses do not perform as well. Canon on the other hand, which only recently included/support lens correction in-camera on the very latest bodies, have had to maintain a little higher physical IQ in the lenses.
Sure, most pp software provides lens correction, but not on off-brand combinations.. so you will not get the proper corrections on something like the 14-24mm when used on the Sony body as you would on a Nikon body, and the same goes for the 17mm or 24mm TS on the Sony body, but the Canon's would need less correction to begin with.
Rental of your proposed setup will provide the best information regardless..
To give you an idea on what benefit in-camera corrections can make, DxO has the opportunity to test lenses on an independent body - a real measure of how a lens is designed, built, and performs - by testing on something like the A7R (as it has the same resolution that DxO says makes all the difference in the world) but stated that most people purchasing something like a Nikon lens would be using it on a Nikon body, and therefore any compensated benefits to be had in that combination are relevant to the lenses performance scores.
(Even though in-camera corrections mask the lenses physical design and performance)