I am playing as an Orc, but I honestly find the temptation to click the Berserk "I Win" button too much sometimes. I want to switch him to a Nord.

If I do that int he console via the showracemenu command, will it mess up anything in my game?

If it doesn't, what are some good face, hair, beard, etc. mods to make a grizzled looking viking (Nord) warrior?

immersive weapons and immersive armor will give you a bunch of weapons and armor for your viking character