Cloning of a drive, seems relatively easy. Is there a guide that you can recommend that shows how to reload the OS, on an iMac?
[doublepost=1463884964][/doublepost]I found a link: https://support.apple.com/en-us/HT204904
Before you purchase CCC, ask yourself why do I pay for this when I have Time Machine included in my OS. You can always use TM now and then research CCC, or other options, and know for sure that the other app is a better fit for your requirements.
Not for nothing, but CCC does off you a trial, so you can play with it, and see if it suits your needs.
What I like about CCC is its performance, especially during the restore process. I once had to restore my system via Time Capsule. Took 8 hours. I then switched to CCC and it only a 2 (during a later restore process)