I’m not sure about the Chewie removal though. The weird scene “good bye Chewbacca” removed seems enough to me to deal with the “fan service” issue of his presence. Besides, it was the last time Peter got the part entirely. Do you believe the shot of the Clones “The wookies are dead now” could be retained ? It shows how the new Empire is dealing with certain allies, which is cannon not only with ANH (“this… thing”) but with Rebels and Solo as well.
About the Yoda/Qui Gon scene, you could begin the dialogues during the wide exterior shot. You could then gain a few seconds; don’t know if it’s enough to get the entire lines.
“I have to say that I felt George’s group of six films had more innovative visual imagination, and this film was more of a retrenchment to things you had seen before and characters you had seen before, and it took a few baby steps forward with new characters.” - James Cameron about Episode VII.