I know that you hope that they will not be protected by the 1st amendments free press clause. But past judgements on the various forms of things that are protected under the 1st amendment easily shows that wikileaks will fall under the same clause.
Also you are wrong that the courts should decide on who is free press and who isn't. What would you say if the courts decided that the Wall Street Journal was not of the press? Or Time Magazine? Or any other news organization?