This can't possibly be a good end solution! Haven't you read everyone else's blog posts and forum comments that there's no possible way you can ever build anything as good as _insert_vendor_name_here_ has done with their cloud?
There's 0 chance that you'll be able to respond to a 2400% increase in traffic/usage in under 43 seconds! And you'll never ever be able to replicate around the globe instantly, and even if you could, it'll cost so much more than _cloud_vendor_ because they have economies of scale you can never achieve. Ever. Seriously.
I just can't believe someone would consider - you know - owning and managing hardware that they control with their own SLAs and support people in place. Where's your sense of cloudsourcing?