Remember one thing, anthing you hear is from some Jedi Historian. So the truth on how Revan is thinking at the time remains not totally known. My guess is that he is using the Sith Emperor from day one, to build his own vision of a Republic (which is basically Revan's Empire).
And note that the timeline kinda totally ignores the Exile? Maybe everyone thinks that the canon of of having that stupid Mical poodoo on the Ebon Hawk is a bad idea, Briana ftw. (Yes, I don't mind Exile being female, but Mical I CANNOT stand)