You're not going to want much armor with the fauchard. It's low damage so you need to be able to keep people at range as long as possible. It's also very useful to be able to run if you see more enemies coming, since you won't be able to kill them fast enough before you get swarmed. Basically the lower the better here, possibly around the level of tribal armor.
Just watch out for ranged, they'll annihilate you if you don't get the jump on them.