The one trail that you need to avoid is Mineral Creek off the highway just south of Ouray. It is part of the Alpine loop, but would be to difficult to tackle with the tundra. Not worth taking any unnecessary risks while enjoying your vacation. You can start your adventure from Silverton if you want to do the historic Alpine loop. There are so many places to enjoy and the scenery is second to very few, and though it is very busy place, just take it at your own pace and it will be a place you will long to go back to. Like I have said in so many other threads, my favorite place to go in Colorado and I try to go there every chance I can.
Since my wife doesn't like to do shelf roads so she sends me off with her blessing, I have been searching out dispersed camp sites that she won't mind the drive to so that we can enjoy some hiking and the towns in the area.