I think you may have been better off getting i5s and using the savings to get Win 8 Pro. The bottom line is ALWAYS use the pro versions in an office environment especially if you are setting up a network from scratch. I hate to say this, but what is it about Home that people don't understand. Home belongs at home. Pro and Ultimate belongs in a business.
The differences. Well you have already mentioned RDP, but may as well state that while Home can rdp to other computers, it cannot be a host. So, if you are at home, you can only RDP to a Pro or Ultimate PC. Pro versions have BitLocker and EFS encryption for protecting data on a hard drive that is sensitive like patient data. When will some agency check to see if your data is encrypted. You can also get Encryption to go, to make sure your USB drive is encrypted. (Flash drive). You can use Group Policy on Pro and not Home. If need group policy, well that makes the decision for you. You probably won't need this, but it's rather cool that Pro can do Hyper-V. Finally, Pro will work with a domain. Home won't. Again, depends on whether you will use a domain. I don't know if you plan on using a server.
If you don't like the Metro Interface, then I would purchase Start8 and turn Win 8 Pro into Win 7 Pro. (for the most part).
