Glenn, I hear you. 30-40 people over the course of 3 parties, isn't the same as training someone for a week, though, right?
You give me anyone, even the most apathetic teenager, for a couple hours, 5 days straight... and I'll have them stretching some pretty mean doughs on day 3. It's nice if you can stretch the training out over a few weeks, since the longer time tends to let it sink in a bit better, but it can be expedited.
I know you're trying to idiot proof this, and, where ever you can make it simpler, you should, but I'm not sure you need to cut that many corners on the stretch.
Now... simplifying cold fermenatation- and warm up times- yeesh, that's a little scary. I guess you're planning on using the dough straight from the fridge?