RE: becoming a guide
Guiding probably is not a full-time job. It would tend to cut into your personal hunting time, I would think. It has to be hard on the family life -- not being around to help your kids with school work, watching your kids play in their baseball/football games, not seeing too much of the wife --during the hunting season. Then again, I suppose some people find that guiding provides a supplemental income to other various money accumulating activities. Maybe a ranch hand can guide during slow work times?
Guiding would not be for me. I agree you ought to think this through carefully and separate the imagined glamour from the reality. Also, think twice about doing something you love for money. When money gets involved, things sometimes change and not for the better.