You seem to have most things covered; but, the more complex you make the chain, the easier it is to slip up and forget/misconfigure something.
Everything were talking about here is what I'm specialising in at University at the moment: digital & anti forensics/security.
OpenYourEyes, I'd like to reward your effort if you give me an address, I will.

Thanks.
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I'm off to grab a bite to eat; I'll rack my brains when I come back to see what else can be done/is being missed. Hopefully we can get even more input from people on this aswell.