Nice setup!
Do the iMac & PC play well together?
Yes they do...for years, I've been trying to use the XP Networking wizard...to no success.
With the MAC server sharing stuff, I set it up in about 10 minutes yesterday...I am now able to use the MAC, see my PC hard drives, and click on the PC shared folders and simply drag and drop files from the PC hard drives to the Mac hard drives.
I've moved all my pictures and videos over...it's pretty incredible how it all works together...
G