I've been inspired to also write a script. Admittedly, I'm torn between two mutually exclusive takes:
* Use only Star Wars '77... meaning Darth Vader and Anakin are two separate people.
* Use the whole OT.
I believe I'll go with the first, since I utterly reject ROTJ as canon. However, it's worth further meditation, since both hold so many creative possibilities, plus the fact I enjoy ESB.