Yes Matt is correct, the app from end it Knockout.JS and jQuery connecting to a serverside API via AJAX requests. I am unable to provide much for server-side performance data, so that will be black-box. I will let the group know if there are any major server issues and when they are expected to be resolved. I can also provide manually some server usage stats (load, cpu utilization, etc)
The performance scenarios would seem to me to be hit it as hard as you can with web requests and see what happens. Probably ramping up from 20, 40, 100, 200 etc simulated users and finding the point where starts faltering and then a little bit further until it does something interesting.
My understanding is that the perf testing will be happening as phase 2 of the contest, Matt could you reply privately with schedule by groups?