Too many nested quotes

There are a couple things you can do to accomplish what MeTHoDx wants with a VM.
1) When installing select, "Encrypted Partition" in the install menu so that the entire VM won't boot without a passphrase
2) When you have the VM setup in stock form - just a fresh install with maybe some updates, shutdown and take a snapshot
3) Boot up the VM and move forward with installing/compiling the client. Restore your .json backup and make sure all is well.
4) Shutdown, take another snapshot, export the entire VM (believe VirtualBox refers to it as an Appliance) and put it on an external drive or something. I'll be huge.
5) Fire up the VM whenever you want to use the client.
If your system is stolen no one will be able to boot the VM without the pass phrase and your wallet is then again encrypted in that VM. Pretty safe. If you get a new computer just install VirtualBox on that machine and import the image you made in step 4.
If you decide to go this route I can guide you through it in PM's.