Custom Ubuntu ISO installation

I am looking for someone to create a customised Ubuntu 20.04 (latest version) Installation ISO image.

The customisation I require is to apply the MAC OS theme - as described on linuxconfig dot org
and how-toinstall-macos-theme-on-ubuntu-20-04-focal-fossa-linux

https://linuxconfig.org/how-to-install-macos-theme-on-ubuntu-20-04-focal-fossa-linux

I will burn the customised USB to a USB, from which I will 1) install Ununtu on systems and 2) run a live Ubuntu USB
in both cases, I want the interface installed or run live to be the MacOS interface - out of the box without any config.

Notes.
- When I run the live usb or install Ubuntu - it should boot into the MacOS look and feel
- When I run updates on the system, none of the MACOS look and feel should change
- You will need to provide the ISO via a download site for me to test it works
- I also need you to look at and confirm, which other Ubuntu flavours this same process will work for (kUbuntu, Lubuntu, Ubuntu etc...)

What I need from you
- Do you have any questions?
- How long will it take you to deliver the custom ISO?
- What will you charge?