Just buy one now and get going, they aren't that expensive. We also have a series event in Lyons this year so even if you stay near home you'll cut the cost per comp in half! Moto national May 24-25 at Texas Creek (between Canon City and Salida)and 8 other series events so plenty of riding to be done in CO through the year.
I just sent this flyer and a summary to yourgroupride.com to get it on their race calendar. Maybe somebody needs to spam the CSU, CU, Mines, etc. cycling teams? Are there MTB clubs around that should also get the flyer?
When you set the sections, make sure the MTB sections wont knock teeth off a 42 tooth ring
Some of us will be there most the day Friday setting sections and will camp friday night. There are plenty rocks to ride that wont be in section so there should be alot of riding going on friday evening also.