You should be able to clone your image to another HDD, and bootup with that HDD. You might have to reactivate Windows 8, so be ready to make a phone call. Otherwise, you should be fine.
In case you're wondering, I have done this twice for two different people. I used DriveXML
to get the job done.
Experience: I'm a PC technician, who has done this for nigh on 15 years.