Eric's solution will work but is potentially a violation of Sage's license agreement by installing two copies of Sage 100 on multiple servers.
I agree with the RDP recommendation. You will need a single copy of the open license version of Office in order to run it in a terminal server environment. However, once you have the open license copy, you can use your Office 365 licenses on the terminal server so additional licenses are not required if you are using office 365.
Running Excel and Access on the RDP will greatly speed the process with limited incremental cost.