I want to setup a bunch of laptops to be web kiosks, I'll organize my wants into a list so that it's easier to skim:

• Open a version of Firefox with the normal ui, tabs and all.
• Automatically enters a session with no user input on reboot
• Doesn't allow doing anything but interacting with Firefox (kinda obvious, kiosk and all)
• Auto-login
• Automatic updates, with them being applied on restart
• Firefox settings reset on reboot

Nice to haves:

• nice Plymouth screen to hide the scary code on startup.
• completely block any attempts to change configuration on Firefox
• ad-block
• easy deployment to a bunch of machines.

If these sound like pretty strict requirements, they are, I'm doing this to attempt to get an internship by making my school's web kiosk laptops not suck (they currently run a janky install of Ubuntu 18.04)

Any help would be greatly appreciated, and I'd be glad to add more information.