You're fine, just your questions are pretty basic/wide open. We can't help you with rifle vs muzzleloader (Which do style of hunting do you prefer? Does time of year matter to you? Which weapon are you more competent with?), but once you nail that down, you can use Colorado's Big Game Draw Recap (Google will get you there) to see what points were required for what units last year (or you can use GoHunt. 7 days free, then $150).
Find a few units that took more than 0 points but 4 or less points and start a list. Then compare the units and try to sort out if they took more points because they are close to a city (people don't like to drive), are actually a better unit, or people just think they're better because they used to be back in 1992 or last year some YouTuber blew up his channel hyping Unit X.
Now take your shortened list and start looking at public land availability, terrain, and access. Eventually you'll be down to just a couple of units and you can flip a coin and apply.