use a combination of original trilogy, SE 97 and SE 2004 DVD in each case color correcting for it all to match.
SE 2004 DVD used as much as possible, although the opening crawl and starfield is better on my 97 copy. + mos eisley will probably be the OT, although the speeder was corrected, I do not want Ronto's in any bloody shots if I can help it. no frigging spy droids either.