I do wonder how they are ever going to accomplish so mammoth a task. Even the first three, which fits the adventure movie template the best, are far too large to have a hope of fitting into the adverage attention span of an audience member.
Still, on the subject at hand - Angelina Jolie would make a good Lanfear I think. I haven't read all of the books so couldn't say as to all the characters, but I do think that the casting director would do well to stay away from famous faces for the core characters of Rand, Perrin and Mat (and possibly Egwene also). Or Rand, certainly.
If people see a famous face in the roles, it will make it very difficult for people to believe that they are niave, innocent barely-adults who are caught up in events far beyond them in the beginning.
Also, the choice of who to play Moraine will be a key one, as she is so important to the story of the series. I do agree with that website on a few things, namely donald Sutherland as Thom Merrilin and Steve Bucemi as Padan Fain (if ever there was a creepy actor for a creepy role).
Still, I agree with the Clansman. This will be a nightmare of a series of films to even approach.