Couple of things:
Brake sensitivity isn't as bigger deal on a loaded touring bike, compared to say a MTB or road bike, as long as they aren't stupidly insensitive. But if you don't plan on dismantling your bike for travel the hydraulic will be OK, travelling; cable is better because of it's physical strength, you can hang the bars off it while packing your bike. With cable operated brakes just getting some decent pads, compressionless cable and not using el cheapo calipers is probably good enough. If you need more braking or sensitivity the cheap fix is to go as big as your forks will allow with your front disc. You can buy TRP Spyke or Spyre calipers off Aliexpress for next to nothing, but the stock pads will be junk compared to aftermarket. Spending the big bucks on the cables will bring the biggest results however.
Shimano IGH with a front derailleur or IGC; the biggest problem is the torque rating, you can't go too small on the front chain ring to get down to touring gear inches in the low 20s or high teens else you will exceed the 1.9:1 rating of the hub. The Rohloff can get down to 13 gear inches and still be OK with a 26" wheel. Pity, I'd fit one to my partners bike with a ATS speed drive otherwise, to save some bucks on a Rohloff.