I like the idea. I should have specified though; I want to keep as many surprises as I possibly can.

Therefore, in ESB (since it's the second movie being watched), I would cut the mention of Luke being "the offspring of Anakin Skywalker". I don't want Anakin's name mentioned at all during ESB because I want people to wonder still, after the big reveal in ESB, 'Is Vader really Luke's father?' And upon starting TPM 'Who is this Anakin fellow? Surely he's not... could he be? Nah' But then at the end of Episode III it'll be like 'O_O No way... he IS Vader...'

I want there to be an element of surprise in the big ESB reveal, as well as surprise in the transformation into Vader in Episode III. Of course, a lot of people will still be able to put two and two together, but, it can still be made to have some punch to it. Does that make sense?