Automation-Ready Template for Personalized Storybook

I need a PDF or document-formatting expert to convert a 120-page personalized children’s storybook PDF into an automation-ready template. The goal is to make the file compatible with n8n, Make.com, or similar automation platforms, allowing placeholders for text and images to be dynamically replaced. Key requirements include:
1. All “[name]” placeholders must be programmatically replaceable (e.g., {{child_name}} or %NAME%).
2. All 15 internal images and the cover image must be dynamically replaceable (e.g., {{image1}}, {{cover_image}}).
3. The child’s name on the front and back covers must automatically update.
4. The replaced name must retain the original font style, size, and positioning.
5. The final output must be a high-quality, printable PDF with perfect layout preservation.
6. The system should support JSON-based data replacement or API input for automated generation in n8n or Make.com.
7. Delivery within 3–4 days is preferred, but no later than 1 week.