Full frame 14-24mm, Crop sensor 8-16mm. Really doesn’t matter so much as it did before what your sensor size is, and the example above doesn’t account for a matched lens to the sensor size. Most important thing is that you have a quality, low noise sensor and a quality, low distortion / easily correctable lens, which there are many. Full frame argument is getting less and less important before anyone shells out for a Nikon d810 etc and a matching wide angle by Nikon or Tamron. For the same cost as one of these lenses or a body, you can buy a camera and lens that will cover you with negligible differences in the right hands (Fuji XT1 with 10-24 for example).
If you are going to move from bang-up to a Cat D, it becomes useful to have things like CDs, stereo, plenty of clothes, knife fork, spoon, bedding, towel, etc. But these are all things with low to zero probability of being allowed in a Cat B, so if you are sure that someone on the outside can bring those to the first Cat D visit, or send them in, don’t stress about taking them to prison – it will just be more stuff to deal with on the day of sentencing and more to go through with the guard. It is useful to have one set of normal clothes though (in addition to the suit or whatever you wear to court) to be able to wear in the days between arriving at Cat D and getting your first visit.