Depends on how well you do it. However, your expertise on Norse mythology won't really be needed if this is taking place in the 13th century, because Scandinavia had been mostly Christianized by then. So basically we'd be playing a village of oppressed peasants since viking raids had ended hundreds of years before the 13th century.

Having some historical basis in the RP would be nice as well, something similar to the Vinland Saga manga series, which I would recommend to anyone who enjoys the Viking television series to read. 

[url=http://www.mangahere.com/manga/vinland_saga/]

Then again, having a divergent timeline could be interesting. Alternate history can be awesome, if done correctly.