Well, thanks for the clarification on the term suite. You have a good point about some suites being very musically varied. For example, the "Peer Gynt" suite, by Norwegian composer Edvard Grieg, contains songs as different as "Aase's Death" - a lament over Peer Gynt's dying mother - and "In The Hall of the Mountain King", "Anitra's Dance" and "Morning Mood" are all very different from that.
My point was more that I don't see SDOIT as one song. Whether it is, strictly speaking, a suite or not was not the point. I mean, the individual parts are as different as Paschendale and Journeyman, or Creeping Death and Nothing Else Matters.