I have a Colorado CC permit and mostly carry when in unfamiliar urban settings or out in the bush. You are safe in most campgrounds especially in snowbird or long term parks. However, I will carry in overnight and urban parks when walking the dogs early or late in the day.
Take a training class, get your CC permit and practice using your weapon. Don't get whacky with distances. Chances are if you have to use your weapon the distance will probably be 15-20' maximum and most likely half that. I practice part of the time shooting from the waist without aiming. In a really bad situation, you may not have time to take your stance and aim. If you are not familiar with weapons, go to a good gun shop and pick their brain.
I personally carry a Ruger LCR 357 hammerless five shot revolver with a 1 3/4" barrel loaded with 38 Special +P personal defense rounds. It is simple stupid and small enough to hide in the palm of you hand. Decided against semi auto for those reasons. Guess in a real gun fight I'm in trouble, but most of the time you will only have one or two targets.
Most of all remember never draw your weapon unless you are prepared to use it, and once you use your weapon your life is changed forever.