Hello Daren,
how long did you wait for the scenario to boot in Qemu? IMHO your provided log is truncated maybe you just have to be more patient to see some progress. On the other hand, it does not make much sense to run VirtualBox (a VMM) in Qemu (an emulator) and we do not test this use case. So, please don't expect it to work flawlessly. I suggest you find a Intel-VT-capable box, e.g. a Core i5, and boot from USB storage.
Regards