Sounds like a good way to make use of old eMachines, at a large discount too.
Finally, the year of the Linux Desktop! (eMachine edition)
Sometimes, designing systems for non-technical people requires a little compromise on the licensing extremism that is very baked into FOSS culture.
It is why most Linux folks are stoked that Linux can play Windows games reliably — it means that millions of Windows lifers are getting exposed to Arch Linux for the first time. Sure, Steam is proprietary, and so are Nvidia drivers, but nobody decides to start with Linux and stay there (they do, but, I am talking single digit numbers vs the billions using Windows). Everyone has to start somewhere.
That said, big frown on Ubuntu. I would personally prefer something like Debian that has fewer major update increments, or an immutable Arch setup.