Premium Photo Album Design & Automation

Project Overview
I am looking for a freelancer to design a set of high-end, premium photo album templates and create an automated, 1-click batch workflow (using InDesign Data Merge/Scripts, Photoshop Actions/JSX, Python, or Lightroom). The tool must automatically take a folder of source images and generate print-ready, double-sided spiral album PDFs without manual placement.
​1. Album Specifications & Layout Requirements
​Size 1: 9 × 11 inches
​Layout: 4 photos per page (grid view).
​Capacity: 64 total photos (16 pages / 8 double-sided sheets).
​Designs: 2 distinct layout variations.
​Size 2: 4 × 6 inches
​Layout: 1 photo per page.
​Capacity: 90 total photos (90 pages / 45 double-sided sheets).
​Designs: 2 distinct layout variations.
​Size 3: 11.7 × 16.5 inches (A3)
​Layout: 6 photos per page (grid view).
​Capacity: 108 total photos (18 pages / 9 double-sided sheets).
​Designs: 2 distinct layout variations.
​Total Designs Needed: 6 templates (2 design variations per size).
​2. Design & Styling Guidelines
​Aesthetic: Minimalist, elite, high-definition print-ready (300 DPI, CMYK).
​Color Schemes: Premium themes utilizing black and light gray backgrounds, distinct page borders, and defined photo margins/spacers.
​Aspect Ratio Handling: When an image does not fit the grid ratio:
​Fit the image to full size within its frame without distortion or unwanted cropping.
​Fill any remaining empty frame/page area with a blurred, expanded background derived from the same image.
​3. Automation & Workflow Requirements (Crucial)
​Reusable System: The final setup must be reusable for all future album orders.
​1-Click Generation: The solution should allow me to select an input folder of images, pick a template size/style, and automatically generate the complete, correctly paginated, double-sided print PDF.