Cheald:
Yes, it COULD be finished fermenting in a week, if conditions were ideal. Please let us know the current temperature and the specific gravity readings. That will allow us to help you.
BTW, Spagnols makes two Rosso Grandes...Cellar Classic Rosso Grande, and Cellar Classic Winery Series Rosso Grande Eccellente (with grape skins). Presumably you have the first one?
Steve