I agree with Foundation 100%. I have never used an outfitter myself either, but I know a few that are very successful. You need to hire guides that can talk the clients up and make them think they are in the game, even if they are out of shape, can't shoot, weather is too hot, no game in the area this year, etc. Even if they don't have a chance, what you are selling most clients is the adventure and excitement of a real Colorado hunt! You gotta make them believe!! That probably covers 90% of the clients. You can actually do all this with honesty and integraty, which is important, as Foundation stated. For the other 10% (the ones that really are hunters), you just need to deliver and get them a shot at a good animal.
Good luck, sounds like you are in for a new adventure.
-- Bob