Upon entering the game I realised my nights were actually too bright for my taste. So to change this, I had to deactivate then reactivate the climates of tamriel patch then set the night level to 2. This worked, and now the night level is fine.
But uninstalling mods causes issues with your save, I know this. The character was a 'test' character anyway. But what about my game as a whole? Can I go ahead and start a new game just fine? Or do i have to uninstall skyrim +mods and start again from scratch?