There usually is no need to add any oil between oil changes on most modern engines, the C-14 included.
The brake reservoir level will go down as the pads wear and the pistons have to extend to make up for that. You still should not have to add any fluid to either brake system even as the pads reach end- of- life. Remember that when you squeeze the pistons back into the calipers, that fluid will be driven back into the reservoir so don't overfill the brake reservoirs, especially when the pads are considerably worn.
The clutch hydraulics should not change level. The clutch actuation does not change as the clutch plates wear; the clutch always has the same amount of travel regardless of how far the pressure plate actually moves.
You should not need to carry any kind of extra fluid, and you should not have to worry or think about it on your trip. I look very occasionally to see that the oil level is somewhere in the sight glass, just to make sure the crankcase has sufficient oil in it. After that, no need to worry about any fluids other than air in the tires and even then you will be helped along by the on- board TPS sensors.
Brian
I ride a 2011 with about 2000 miles on it. At 800 miles it was changed over to Mobil 1 synthetic. My question is, what are you guys seeing for miles before needing to add oil? Also, are you seeing any drop in clutch or brake fluid over time?