I don't know your circumstances, if distance is the reason you want to go with a guide or not. My .02 Colorado is an easy DIY state. You just need to plan for that particular unit. Do all your online scouting. If you can plan a summer trip to get to know the area, do it. If not don't worry about it. Show up a few days before the hunt opens, scout things out, you should be good to go.
I agree stay off of the divide road, hunt lower elevations on the Southern portion of the unit. But don't rule out the North. North is not as accessible. There are several pinion juniper areas that have been railed sometime ago. PM me, I will to discuss more particulars. I have only hunted the unit 2 times and it has been several years ago. I don't know what current herd conditions are like. Good luck.