I used Command-R and commented that in addition of no booting the recovery partition didn't seem to go to internet based on this article
http://support.apple.com/kb/HT4718.Pressing Option while booting does also present the gray screen, no changes.
Got it! Thanks for the link; I forgot about Internet Recovery. (You're correct that your Mac is not new enough to take advantage of it.)
I don't remember where, but I've read that when command-R doesn't work an option boot should (
Edit: offer your Recovery Partition as an option), so your grey screen sounds ominous.
I've got my fingers crossed for your CCC clone.
Keep us posted.