Hello, Paul.
I think this project is very interesting and I would love to help you with it.
I am a mexican native Spanish speaker with a BA degree in Hispanic language and literature.
My English is maybe not perfect as in a native speaker but I think is good enough for this job.
I do have a sense of storytelling and I would like to learn about this indigenous tribe, it must be is fascinating.
I also can work with a 'per word'-price if you prefer.
Looking forward to be considerate,
Kind regards,