AFAIK, there's not official class-combo that comes anywhere near describing a character like Paul Muad-Dib or Leto_Atreides_II.
If there were, it could spare me this effort.

I like the fact that my suggested class manages to do that, but I don't like the fact that the class offers customization (not counting general feats) only as far as placebos go (not a lot of choice I had, given all Bene-Gesserits practice the same set of power... and Paul's powers were a subset of Leto's).
So if there's a class combo for Dune's leading characters I'd sure like to see it - Then we can ask if it's T3 or not and how to make it T3.