A friend and I did your green route a few years back. Bivy'd between Trailmaster and Peak 12,525, then continued on to Cirque Peak and Mt. Langley the next morning.
Your green line is all class 1 - 2, except if you want to get on top of Peak 12525. That's short and easy class 3.
I've climbed Cirque quite a few times this way.
Pictures:
https://www.flickr.com/photos/rockwellb/sets/72157644331633278/
