Is it too late to make a quick suggestion? I did this with one of my fanedits and it enhanced things. I think it’d be cool to have Rey’s voice echo or reverb whatever the term is as she does the I am iron-girl bit. Might actually work and be similar to palp’s voice change in RotS as all the sith speak through him. Like “And I… am [all the jedi]” My best comparison is to how Galadrial sounds when she’s turned crazy by the ring in Lotr. Guess it’s better to show you what I’m talking about tho…
If it’s already been suggested before then oops, sorry, but wanted to try just in case.