I just saw this older post because I was doing the UTBDR when it was originally posted, so I feel like that gives me some experience in answering this. The limitations that might dissuade you as I see it are comfort, power, and ground clearance.
Comfort can be suffered through by occasionally standing up to get blood back in your ass. Ibu and whiskey are also helpful if you can take the heartburn. The stock seat is torture for me after a couple of hours, but good scenery takes your mind off of it a bit. Power might be an issue for you in Colorado. At altitude they really slow down. I have a 13 tooth counter-sprocket and still found times that I had to be in 1st or 2nd gear to climb dirt roads at 9000 or more feet. The last issue, ground clearance, really depends on what trails you take it on. I've done quite a few technical and rocky sections and had to walk the bike over larger rocks that would hang up the skid plate. I don't think most people will encounter this, but it has happened enough on me that I upgraded the skid plate and riveted a UHMW plastic sheet to it for extra protection and to help it slide on the rocks better.
But should you? Hell yeah, if you are into that sort of thing. I definitely own a more capable and appropriate bike for that adventure, but it's all about the experience you want. Riding with my friend on a 7 day off-road adventure on these little machines makes me feel tougher than the helmetless Harley rider who is too cool to give a nod back. But every big adventure bike we passed gave us acknowledgement and wanted to talk. Respect