I would suggest o headlight switch for city driving.
The plastic radiator guard should also be removed. Too restrictive.
Xenon lights should bing down consumption if you install 33W. Rear brake lights and running lights and front running lights could be replaced with leds. I think the front position light could be 1W and the rear position lights 1W X 2 and brake light -I couldn't find specs-.
On the other hand your voltage readings are excellent. The only things that could get you in trouble would be weak battery, a short or fuel pump dying in very hot conditions.