That sounds like a blast. Literally =). Long range shooting always interested me but not having a place to really try it limits you so to speak. I'll definitely keep that invite in mind. Thanks brotherJoin us sometime at Peacemaker Frontier Day- shooting to ~1100yds. Lots of folks far more knowledgeable than I to give advice.
If you have a flat shooting rifle and decent scope, you'll have a blast. My first trip out I had a TC Compass in 6.5CM with a bipod and a 3-9x40 Vortex scope (<$500 all in) and was hitting a pizza box size steel target at 1000yds.