Your custom edition will be very close to the OOT, so it might be quite possible for anyone to adapt a dubbing track to it. If you begin to work on your edit, try to keep a logbook of the changes (with the timestamps), with that information making any alternate track could be quite easy. For your PT edits it would be too much work (and no dubbing exists for the deleted scenes anyway), but for the OT (and even the ST), it’s possible.

ANH is the episode that suffers the most of many bad SE changes (cgi rocks, Mos Eisley entrance, Greedo shooting first, Jabba,…). I like the fact you still want to retain the good SE elements (I personally like the cgi dewbacks - even the ones in front of the cantina, but I hate the one that goes in front of the camera, of course 😄). The SE Biggs scene is good. Would be a shame to remove it to correct a slight continuity issue with R2. What about reinstalling the line about Anakin ? (is the line inconsistant with the PT ? The actor was 37 in 1977, so “37 - 22 = 15”, he was just a boy when he met Anakin during the Clone Wars, or maybe sooner during Anakin’s training between Ep I and II. Is there a video file that could be used for that purpose ?)