English-Spanish proofreading

I have a English-Spanish translation of an Urban Fantasy novel, part of a series that I want translated.

I would like to make an assessment of the quality of the translation.

The project requirement is to annotate errors that you find in the first 3 chapters of the novel. This document is 8,400 words.

At the moment, I'm looking for quotes for the work, including the cost and the time necessary.

I would supply the English and Spanish documents in MS Word DOCX, and would require the Spanish document to be marked up using Word's 'Review' facility, identifying and correcting errors.

If I proceed beyond this assessment, I would expect to require proofreading for all the novels.