and then the windscreen: I had the Zero dual sport one, very nice during summer to protect from insects and also wind on the chest. But for winter it was too small. So I took the same maker than the Zero one (mra.de) and take a variable big one, the Vario Screen for naked bike with standard 22mm handlebar mounting. And it make a huge difference, the helmet can be protected and the cold wind is no more on my shoulders.
As I said on another thread it's economaical too:
with this windscreen, I have less aerodynamical drag, I'm setting the eco mode to 0% regen coasting and 100% regen braking. I'm really able to "coast" with no throttle more often now, and I use a small input of front brake to enable the regen braking without hydraulic braking when approching a red light, a turn, etc... Request smooth riding, not a thing I'm use to usually, but now that the road are extremely slippery it's the good way of driving...