So, if it has been mutually established that you are not one to follow the norm…then don’t stress over it.
Are you even going to be living in Pak? Shouldn’t make a difference either way. You can discuss the matter with your guy…if he has no problem with it…then keep your maiden name. Don’t make things complicated and ugly looking with a hyphen. I know some women who put a hyphen after their maiden name…followed by their husband’s family name. And people end up calling them Mrs (husband’s last name). Keep it simple. Not taking on his first name or family name will not make you a bad wife. It’s not even something that’s encouraged in Islam. I know many Arab women keep their maiden name. And I’ve heard that on Judgement Day, you’re called by your father’s name.