Just a few things that need clearing up.
Will the republic be the Empire at the beginning of EpIII
Will all the Jedi die during EpIII because don't forget Darth Vader helps the Empire hunt down and destroy the Jedi so does this meen that Ani becomes Vader in at the beginning of EpIII, and if he does kill the Jedi how will they go about it, does he kill them all indevidually or do the Empire kill them all in one go with some kind of large weapon or movement a bit like the arena sequence in EII. And also Luke and Liea have to be born and separated, Obi-Wan and Anakin have to dual, the Emperor has to revial himself as Sidious and tempt Anakin, Yoda has to go into hiding. Personally I don't see them being abled to fit it all in EpIII and alot will take place between the prequal and origional trilogys.
Personally I think that Someone or something will blow up the Jedi temple, killing a large number of Jedi, some Jedi hide and Vader helps hunt them down, Windu gets killed in a dual with ani and that's about it, what do you think?