Ultra-HD 2D motion graphic (8640x3840) | 50fps

High-resolution video for a multi-screen display with the following specs:
Technical Requirements
* Resolution: 8640 x 3840 px (Single master file for a 4-screen layout).
* Frame Rate: 50 fps (Cinematographic fluid motion).
* Duration: 70 seconds.
* Software: Adobe After Effects (Required).
* Deliverables: High-bitrate MP4 (H.265) for final playback and a high-quality ProRes 422 master.
Scope of Work
* Structure: Seamlessly integrate a provided intro sequence (.mp4) and build the remaining 60-odd seconds of content.
* Design: Creating dynamic, rhythmic transitions using high-resolution art assets. Style is "sliding gallery" meets "kinetic collage."
* Layout: You must ensure the composition works across a 4-screen layout within that single 8640x3840 canvas.
* Style: Clean, minimalist typography and smooth, high-end motion blur.
Terms & Delivery
* Revisions: 3 rounds of changes included.
* Source Files: Full delivery of organized Adobe After Effects (.aep) project files, including all linked assets, so the project can be edited internally if needed and the final MP4 file with intro included.
* Review Process: To save time, please provide low-resolution "proxy" versions for the first two rounds of revisions.
* File Transfer: Due to the 9K resolution, please specify your preferred method for transferring large master files (e.g., WeTransfer Pro, Dropbox, or FTP).

Note: We already created one video so it will be very easy to understand what we are after as this is a continuation of a project font's logo, etc are all set.