It is a much better trip by train, but you will have the problem of getting all your stuff on there. Whether it is possible to do a removal by train is another question.

From what I've been told you need to have your registration or some other piece of paper before crossing the border, plus lists of everything in your boxes. Then the border crossing guards won't give you any grief about customs duties for things you've already owned for years. There may be other paperwork involved as well, but my experience is with doing this kind of thing via professional removal companies.