Nope.
BB's goal align with Luffy's. Evident by him getting the rubbings from Law and Pudding for reading them.
Him and Luffy are the front runners to one piece. And we can assume they'll fight shortly before luffy gets one piece.
We know that the war against the WG starts after finding one piece.
So, his chances of being the final villain were non existent the moment he showed interest in one piece. So, basically the moment he first got introduced.