Cinnamon pass is relatively easy and should not be a problem if you have any off road experience. Go over Cinnamon to Lake City, get an ice cream at the great ice cream store there, then go back to Animas Fork via Engineer pass.
When you get back to Animas Fork go south to Silverton; DO NOT continue on Engineer to highway 550, sometimes called Mineral Creek, for that route is really bad. I mean really, really bad.
I was there just two weeks ago and some of the jeep trails were still closed due to snow, so check with the visitor centers in Ouray or Silverton. At that time California and Hurricane were still closed so I went north from Silverton to Gladstone, then over Corkscrew; on the Corkscrew route there were cuts through snow banks the walls of snow were over twenty feet above the car.
Other suggestions:
Take a swim in the hot springs pool in Ouray.
Take the short hike to Box Canyon falls in Ouray. They just installed a new extension to the "trail" so you are directly below the falls.
Drive to the top of the falls in Telluride (4X4 only) and see the power plant there.
Ride the free gondola from Telluride to Mountain Village.
Go to Ames, just outside Telluride, and see the first A/C power generating station is the world installed by George Westinghouse and Nikolai Tesla. (used to light the mines in the 1800s).
Another fairly easy 4X4 road is Ophir Pass (my dad was born in Ophir). That has some of the sharpest switch backs in the area, but the drop off beside the road can be intimidating.
Last Dollar road is fairly easy, but still a 4X4.
Brooklyn Mine road is easy with spectacular views.
When you get more time and experience try:
Clear Lake
Imogene (quite difficult)
Yankee Boy Basin (do not go beyond the forest service rest rooms -- very difficult)
Governor Basin
Have fun, but be safe.
Is Engineer going west towards Odom Point (and eventually Ouray) really that bad? I'm probably going to skip Black Bear since I'm not terribly interested in the steps, but everyone else I've seen talk about Engineer say it isn't bad at all.