Very funny national cliché.
The french could say it's very easy to talk courage when one is protected by the sea or the ocean or when one has been waiting someone else to do the toughest job before fully committing oneself.
Geography is by far the most important criterion. Netherlands and France, and I would also add the ottoman empire, lost ground to a large extent because they lacked coal and iron when these were the key ressources.
The UK, Germany and the US became world powers because they had plenty of these ressources.
To answer the question, I start by ... a question. What kind of Acadia are we talking about ? The small province of Acadia, the whole french provinces north of the Ohio river, or the whole french possessions in north America including in 1756 ?
If A, it is only the area of today's Québec, then it means the British have won the seven years war but have accepted to let the french colonists be ruled by the french in a colony no longer big enough to be a threat. So you can have the french colonists still feel like a small State surrounded by a very powerful and rather hostile neighbour.
If B, it is the big map, I would say it depends much on the extent to which the french win the seven years war.
If the result is only some kind of status quo, then there si still going to be a strong pressure from the numerous people of the british american colonies to gain new lands at the expense of the neighbour hereditary enemy.
So unless you have God being a frenchman, you are going to need either the UK and France to make a lastable peace or France to win the next american wars until the french settlers grow enough in numbers to deter the british settlers trying to conquer them.
And so B is going to look like A for almost a century until the french colonists are numerous enough.