jcolwell
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I agree with Jordan and Jim that putting it on a bellows system would make good sense. These lenses are probably not telephotos, and so the film to flange (sensor to lens-mount) distance would be just about equal to their focal lengths at infinity focus; IOW, 290mm and 350mm. That's pretty long. The maximum f2f distance on my medium format Mamiya 645 Auto Bellows N is about 255mm, including the M645 to EOS to X-mount adapters that I used for the examples below. It's easy enough to get a lens board with an extension on it, which is like a tube that lets you mount the lens out front of the lens board.
I attached a few photos of a Schneider-K Xenar 180/4.5 lens on the Auto Bellows N with Fujifilm X-E2, which has about the same register as the A7II. This is the longest f2f lens that I use on the Auto Bellows N (although not the longest focal length). In order to focus on closer subjects, you have to increase the bellows length, and in order to use "movements" (e.g. tilt, shift, swing, drop, ...) you can't have the bellows stretched all of the way out, or it won't bend. I'll illustrate this with a few photos, below.
The first example photo is taken by the S-K 180/4.5 on X-E2 at f/11, and more-or-less infinity focus. The second photo shows the bellows extension used for this photo, with a ruler to show the extension is about 180mm (I had to run around one of the strobes to hold the ruler in place - you get what you pay for).
The third photo shows the bellows at an intermediate extension with some typical movements, and the last photo shows an image taken by the S-K 180/3.4 on X-E2 at f/11, and at the maximum bellows extension of 255mm (which would look just like the first photo of the bellows, but with the camera "stretched back" to 25cm on the ruler). The magnification for this photo is about 1:2.4, or a bit smaller than half life-size. I could get higher magnification by using a longer bellows and focus rail (it's at max bellows extension and max focus rail movements), or by attatching an extension lens board at the front.
IOW, you'll need a fairly long bellows to make use of these 290mm and 350mm lenses, but it certainly can be done.
P.S. if the combined lenses are at 180mm, then you could use the Auto Bellows N system with the same extansions as shown in my examples, but you'd need a sky crane to support those lenses hanging off the front of the lens board. 
 © jcolwell 2016
Example photo S-K 180/4.5 on X-E2 at f/11 and infinity focus
 © jcolwell 2016
Bellows extension for example photo (above)
 © jcolwell 2016
Typical movements at intermediate bellows extension
 © jcolwell 2016
Close-up photo S-K 180/4.5 on X-E2 at f/11 [1:2.4], at maximum bellows extension
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