Yeah just be sure to remember Harold Hardrada fate..

Though they made lots of geographical discoveries. Unfortunately they all were by accident 8) Navigation wasnt exactly on their list... Including all those sieges of Constantinopol, when bods got drunk and kind of missed the turn 8)

Celts in fact were much more bloodthirsty when they were migrating. As well as mongolians. Vikings were just kids in comparition with those 8)