Part of your decision on route segments may have to do with how much time you have to ride and how twisty of a road that you want to tackle.
Your route looks fine and you will have a good time. The higher country will be cool so get out your electric clothing clothing.
The part of the route that you bypass and which I have taken many times is Hwy 191 from Alpine to Clifton. It is a very challenging road. It is basically like the Crest road except that it is 70-80 miles long. Another similar road is Colorado Hwy 92 North of the Black Canyon of the Gunnison. Some of us rode that route at the Ouray Ducati event.
Hwy 191 starts with gentle sweepers at Alpine and then tightens up until you are chasing your tail at the Clifton end. It is a very technical road that takes time to ride, but it is absolutely awesome! But, be prepared for every hazard that you know. Down hill decreasing radius turns, over the hill turns, rocks in the road, sand, cows, pickup trucks hauling cattle, flattened beer cans, other motorcyclists, ....etc. If you are short on time, it may be too much to fit your schedule.
No matter which route you choose, you will have nice views and good road. I hope that the weather is also good for you.
