First thing first get the shoulder fixed. Diesel Crew has a phenomenal shoulder pre-hab on YouTube. Check it out. Go to the doctor see what he has to say. Don't mess around with it, you are 27 and have many great years to lift ahead of you if you take care of yourself now.
I did SS for a many months and have moved on to Wendler's 5/3/1. I agree with Daniel the hardest part for me is the AMRAP on the last set. I don't feel like I am getting the most out of that but I feel better than I did when I was doing SS and have a lot more fun with the conditioning I have programmed.
What we think, or what we know, or what we believe, is in the end, of little consequence. The only thing of consequence is what we do. -John Ruskin