Forum:Portkey in book 4?

I have a question; in book 4 (really the only book that I dislike reading, I find it too involved with romance drama and a plotline that doesn't really add much at all to the story until the very end) why was Voldemort's plan to transport Harry to the graveyard so elaborate? Couldn't the fake Moody just have given Harry any old item for a portkey at any old time of the day/night? If that wasn't up to Voldemort's stuff, couldn't the portkey at least have been one of the golden eggs or something else Harry just would have touched; even the book that Moody gave Harry could have been turned into a portkey. It makes no sense why Voldemort made Moody wait a full year and put Harry throgh the attention-getting (and possibly deadly) Tournement. What was the deal with the Cup having to be the portkey?

Maybe Rowling could have let Voldemort mention that the specific night of the maze was happened to be the only night he could revive himself? (Maybe there could have been a full moon or a certain date's anniversary or something.)