Because he used Bochs, any x86 operating system will run. All you would need to do is bundle a ReactOS image instead of a Win 95 one. However, if it took an hour to boot Win 95, imagine how long it would take to boot a modern OS!
ReactOS is pretty tiny, and consumes just little more memory than Win95. It's one of the less bloated NT series OS, only comparable with NT 3.x series in the memory foot print.
