I agree, that’s looking pretty good already, and some smoke would really help. Even just making the stormtroopers behind Finn slightly more out-of-focus might be enough for those shots.

There’s other shots in the scene, and I think at the very least the shot of Phasma being blasted off the platform by Finn would need to be done as well for it to work. The big issue there is the roof, but I reckon that could be taken from any low-angle shot in the scene that’s in the theatrical release.