That darker nights mod seems nice. The lighting in Bethesda games has always intersected with various pet peeves. For a start, every interior, regardless of realism, is perfectly well lit. You can head down into a cave system, or tombs, so deep into the centre of the earth that no light could possibly make its way there, yet, everything is nice and lit by no discernible light source. Seriously, where is the light coming from? Well, obviously it's coming from a heap of point lights that the level designers have placed every where (sometimes so badly that the specular reflection gives away their exact position), but in-universe there is no source. The same is true for night time. I'm not asking for a completely realistic level of darkness, but the night times in Fallout 4 are especially bright.
It baffles me that they always seem to load you down with tools to see in the dark , yet, never do they create areas that are dark enough to need illumination in their games.
As for actually downloading that mod, why? Why start modding so early? The only reason I'm not playing at the moment is because I was searching the internet to find out why I can no longer select certain plants at my settlement. The game is buggy enough without third parties touching the house of cards that is Bethesda's archaic game engine.