Ironically, the USA are probably the best country to live in, because it has the greatest density of traditionalists...well, maybe apart from France. But the latter has many issues which would make Catholic life more difficult, so I would probably shoot for the US, even though everything ruffles up inside me by merely thinking of such an paradox.
Edit: In case you are not sedevacantist/SSPX, then Liechtenstein would be probably an option, too...at least as long as Archbishop Haas is reigning there!