Hi,
The problem I see is your 24-70mm
lens. I am Nikonian, the Nikkor 24-70 mm
lens with D3 has an upper rail setting @ zoom 24 at 147 on the upper rail. I do not know about NPP of the canon
lens. I used the nikkor on NN5 without problems, but NN4 rails are shorter. So this models steps down from NN5. Because of this it got the name NN4. Great panohead. To be free for the future, I would go for the M1-L Pre Production + RD16, I got one, it is a great panohead. Special price right now on the M1-L Pre. I am testing settings right now for Nikon equipment, nothing wrong with quality or anything else. Very good design and I feel it will fit to your needs better than NN4. Cause I own NN3 MKII, NN5, NN4, R1, M1-L tested with Nikon FX and DX bodies from fisheye lenses to the big boys
14-24, 70-200, I fell I can give you an advice based on experience.
There will be a special Nadir Adapter for M1 as well in the near future. I would add an EZ-Leveller II cause not all of the tripods have legs that "fall out on it's own" once the leg clips are opened. Specially when you use Nadir Adapters, this is the easiest way to re level the panohead because of added torque forces.
Hope this helps a little bit,
Heinz
Ups, Nick was quicker.....

but in total he mentioned the same problem....
Nick is right, for nikkor 24-70 the length of the normal upper rail is too short cause the upper rail set needed for Nikkor 24-70 nearly glides out of the clamp for the upper rail, behind the middle of the clamp and behind the safety pin. I will order a MRF210 to test it.
This is what Nick means:
http://store.nodalninja.com/products...ail-210mm.html
Because it is a modular system, you can use the rails at any place.
@Nick and Bill: using the shop site, I do not find the code "MRF 210". Only on the link site itself you can see the "SKU". Might be good to change the name to M1-Lower/Upper-Rail-210mm. May be some more lenses need a longer rail. I will let you when my Nikon tests are complete.