If you're talking about your own profile (that's how I read the question) you should only put the Acadian template on profiles for people who were born or lived in Acadia, or were maybe the direct, immediate, descendants of Acadians, living in a primarily Acadian community in some place like Ile Madame. There aren't any absolute rules, but it probably doesn't make sense to put the Acadian template for anyone born after about 1850, even if they're living in French towns in Cape Breton or New Brunswick.
So, for your own profile, it's enough to ask for an Acadian project badge, and to follow the tag 'acadian'.