I'd use the '04 DVD with '97 SE audio as the base. This way, all the bad audio is already taken care of.
I'd start by plugging in the original logos from the laserdisc.
And if at all possible, I'd also try to use the "Editdroid" opening crawl, because I like the lack of "A new Hope".
Then I'd see what I could do with the "Look sir, droids!" scene. Ideally, I'd like to have the SE footage, minus entirely new shots. If not, I can plug OT footage in.
I would leave Mos Eisley entrace the same, except cutting the shot of the Ronto freaking out. Starting where that shot would be, I'll plug in OT laserdisc footage until Luke pulls off after the troopers tells them to move along. Then it'd cut back to DVD footage. (yes, i know there'll be a Ronto in the next few shots, but it's allright with me.)
I'd plug wolfman back into the cantina.
As far as making Greedo shoot first, I'd have DVD footage up until Han says "Yes, I'll be you have". Then I'll cut to laserdisc footage for a few frames of Greedy "exploding" and cut back to DVD footage to see him slump on the table. (If that'll work, I don't know)
Cut Jabba. By either plugging in OT for the shot before and after, or doing a new "fade" myself.
And I'll do SOMETHING about Luke's horrible green saber, even if it means plugging in '97 SE footage.
I'd want to plug the original trash monster back in for the few seconds you see it (with '97 SE footage), but no big deal if I can't.
And I'd put the original English "Power - Tractor Beam" back in, but once again no big deal if I can't.
Cut Biggs.
When the X-wings take off, I want to plug OT laserdisc footage in so they appear as white dots. Also, I'll have the initial "onto the Death Star" shot of the X-wings be from the OT. But after everyone "stands by", the rest of the battle will be DVD footage.
That's what I *hope* to do, anyway. It's not looking good so far...