Would you ever consider using BluRay 4k to make the edits. I believe it is possible to get the bonus scenes on bluray 4k. Though Id imagine this would be a pretty big task.
I’m planning on using the 4K remaster for the first two films for V5, since they are true 4K transfers. The rest of the films are unfortunately upscales, which I don’t understand, given all eight films were shot on 35mm. Perhaps it’s due to the digital effects being rendered in 2K (1080p).