Have you looked at PiTop? https://pi-top.com/products/pi-top https://pi-top.com/products/pi-top Although it doesn't fully meet all your goals, it could be a go

Have you looked at PiTop? https://pi-top.com/products/pi-top https://pi-top.com/products/pi-top Although it doesn't fully meet all your goals, it could be a good starting point to bootstrap from.