Update: Friday is filling up. So Brian and I will be driving Friday, shooting Saturday, returning home Sunday. The campground at the range has water, bathroom and showers, so we will be camping.
The match is near Ault, CO (by Ft. Collins). About 750 miles from St. George.
We have room for 4 more shooters in a nicely outfitted E350 van (with mobile internet, a fridge, and power).