Need camping alternative May 27 and 28 2014 after campground closes

I'm going to be in Red Rocks with a group of 11 other people the last week in May. I am leading an instructor course for the organization I work for--www.srom.org. We will be operating under a permit with Red Rocks. Our course ends the morning of May 29 but the campground closes this year on May 27 and we have to be out because of construction.
I wanted to inquire if anyone had property in the calico hills or blue diamond area that would be willing to let a group camp out for 2 nights. We are a professional group that leaves early in the morning and goes to bed early. We are self supported and self sufficient.
If you are interested and want to know more about our group and talk logistics on what it may look like please respond.
Thank you, Andrew Arnold