Anything lossless should be fine to output; ProRes is what it’ll be turned into for use.
And if you are able to place Ren’s face on additional shots from that Snoke sequence, that’d be even better!
I don’t know if not seeing the sun being drained as the x-wings approach is an error necessarily, but either way it’s not a problem introduced by our meddling, so I’m unconcerned by it.