Hardly the "bad guy"! I personally shoot a 750gr setup with tapered shafts, single bevel broadheads, and 70lbs (you do the math). With this there basically isn't an angle that won't provide that shaft very high possibility of a complete pass-through as that system will break shoulder blades, or any other bone it encounters along the way. That said, I also limit my shots to what I can shoot accurately (more below on this).
There is the main point, "Shoot them in a good spot". That said, one also should know their personal limitations, as well as their setup's limitations. A "super fast dart" has a much smaller pin gap than a heavy setup, and the added weight makes it more difficult to shoot accurately out farther, but the added KE opens up a lot more angles.
I've hunted OTC CO elk, primarily in the Mission Mtn. and Engineer Peak (Cascade Creek) area. It's rugged country, so you better know what you're getting into. Also, the elevation is extreme, so you'd better be in good shape. I was living in Flagstaff at the time and ran a lot, so the elevation wasn't much of an issue, but you may want to consider help, not only during the hunt for safety reasons, but if/when you get something down, unless you're very very fortunate, it could be a "mountain" of work to get it out properly.