PDF Document Writing & Editing

I have an existing marketing guide laid out as a 25-page PDF. The visuals and structure are locked; what I need now is a meticulous language edit that fixes every trace of awkward wording, spelling slips, and grammar glitches without changing the overall voice... (Budget: $250 - $750 USD, Jobs: Article Writing, Blog Writing, Copywriting, Editing, Microsoft, PDF, Proofreading, SEO Writing, Word, Writing)