Your doing some things like me. I created a new intro, and I also begin with the attack on Amidala....then I fade in a title that reads "35 Years Later" and then we go into the Tantive IV sequence, but I never cut back to the past until Obi Wan starts talking about Anakin... Then I cut back to them on the lift, and we don't go back to the present until after the speeder chase, and the alley scene with the Zam. So, in a way Old Obi Wan allows us to go back in time... After that, you and I have a lot of differences. Weird thing is, both of our ideas seem to work.
Did I read that you plan on using different music tracks? If so; how in the world are you doing this? I've been editing for awhile, but have no idea how to Isolate audio tracks without killing all other audio... Just very interested in how you do this.