Thanks for the response!
What type of auth errors might I run into, and what would be the best way to go about getting them resolved?
I have seen all kinds of issues. You may think it would transfer fine, until some weird issue crops up a week later. Technically, as long as the primary components are the same, you shouldn't have major issues, but I have seen it happen, so reinstall is always highly recommended. As for activation, I have seen various issues with windows 8, which is probably tied to the method MS uses (changed from win7 and before) that uses BIOS SN of sorts to match the license. Again, best thing to do is start from scratch, activate online while installation is done.