Book Pagination in InDesign Needed

I have a book manuscript that falls in the 100–300-page range and it already lives inside Adobe InDesign. All paragraph styles, master pages, and other elements are locked into a template I’ll supply; what I need now is precise, front-to-back pagination.

Your task is to flow the text cleanly, apply the existing styles everywhere, insert running heads and any folios called for, and make sure the document sails through a pre-flight check with zero overset text, missing links, or font issues. The end goal is a press-ready package: the updated .indd file, all linked assets and fonts collected, plus a final PDF proof.

Acceptance criteria
• Continuous, accurate page numbering through front and back matter
• Template styles followed exactly, no ad-hoc overrides
• No pre-flight errors (overset, links, color space, etc.)

Please tell me how quickly you can turn this around and point me to any comparable pagination work you’ve done.