In my opinion, shoulder stands are a great exercise, but they have no place in a beginner’s squat progression. Frankly, I am not a fan of most of the specific progressions in CC – especially the squats. That’s part of why I felt the need to create Pushing The Limits! I urge you to pick up a copy! 🙂
http://www.dragondoor.com/b69/?apid=4e8cb1ea167b0