How can I do That?

Hello everyone, I have a problem to solve and I need some tips or stugg like that...
So, here is my "problem":

- I have a lot of WS to test, something about 21 webservices.
- For every WS I can use a Different LOGIN, and I have 7 logins to test.
- I have to simulate 14 request/second.

- How can I create "TEST CASES" on loadUI to every login (will be 7 TEST CASES), and control the request/second from the global context of project...

So I thinking:

- One project with one generator to control the load (or speed, resquest/second) of all TEST CASES;
- Seven soapUI Runners (to make the login in server only one time);
- Seven TEST CASES with all 21 soapUI Runnner to test;


It's possible todo it?

* it's possible to control the load/resquest of 7 TEST CASES individually and globally?