If resolution concerns you, then I would opt for the D800E (as I have) to squeeze as much resolution of the sensor as possible. In the real world, there is not much difference between the two models.
I've seen virtually no issues with moiré using the 800E. It does not have an anti aliasing filter and I suspect your field camera does not as well.
Regarding prime lenses, I have the 85mm 1.8G which is considerable cheaper and likely lighter than the 1.4 G and it is outstanding re resolution on the 800E. I also have the Zeiss 50mm zf.2 makro-planar and the 70-200mm Nikon VR II (the latter is heavy). Both are excellent on the 800E.
Lastly, should you purchase the 800 or 800E, make sure you buy it from a dealer that will take it back within 30 days without penalty (e.g. B&H). There have been some left focus issues with versions of these cameras were made during early production runs, but current versions seem OK. Check this forum for more information. Should you get an 800 or 800E, make sure to test for any left focus issues early on before the 30-day grace period expires. Sending defective versions of these cameras in for repair have not been very successful.