Ryan McAvoy said:

I'm dreading trawling through days of WW2 and pre77 Sci-Fi films to find the material I need for Yavin. Suggestions are always welcome.

I started this edit with title cards everywhere as you suggest but when it started to get good I realised that if I picked the right footage I didn't need them. The image told the story just fine. I think I tried that sandcrawler shot at one point but elected to go with a McQuarrie painting instead.

Well if you didn't want to the WW2 footage for the Yavin battle you could maybe cut in stills of the story board in time with the soundtrack (i think there is a complete set in the back of the hardcover of 'making of star wars' rinzler book but i dont have the hardcover). Of course it would be much much less exciting than having moving footage, and make it more like a test animation, but it would at least be in keeping with the films production history. Or maybe this would be an idea for a subsequent project, where you could perhaps include some of the botched takes from the empire of dreams documentary and basically make a alternate reality rough cut of the film without worrying about the story flow as much, as just making an original mash-up.