That's a good solution for new deployments, but it may leave out some scenarios like distributing install packages to production machines in use. The advantage of copying to the Global Preferences folder is you don't have to fuss over what user already has or doesn't have the correct settings - it won't matter.
But yeah for imaging, really either way will work. 
I honestly gave up on CCP - it caused CCDA to crash a LOT in its most recent build a week or two ago. I just installed the trial, plugged in the key, ran the tweak above, and re-created it all into a package with Composer. It's surprisingly stable, reliable, and agile enough for any deployment.