Testing CVE on a Client/Server architecture

I need to analyze the behavior of a CVE - Collaborative Virtual Environment - in a Client/Server architecture, for now with only a single server. The objective is to see how the response time varying as increase the users number.

I thought to use Open Simulator as CVE and put it in a Server, perhaps on an Amazon server?, and simulate multiple clients on my computer to connect them to the CVE on the server and, by scripts, make to move avatars inside of the CVE.

Now, the question is: Is it a good idea for my intent?..and if yes, how can I simulate multiple clients to connect them to the CVE?

Thanks in advance.