First off....get your shoulder repaired. I dealt with rotator cuff problems for over 2 years and finally got it fixed about 3 months ago. I consider myself lucky, because mine is my non-dominant shoulder (knock on wood).
Second....You got a good list. Pick the one you like and go for it. I have experience with a few Tikka's in fast twist 223 and loved them. The only thing that bothered me about them is that Tikka builds them on the long action. I now have a Ruger American Ranch in 5.56 in 1-8 twist. Love it as well, but it is a cheaper rifle.
And of course, there's all price ranges of AR's out there now. Nothing wrong with that, either. And it could serve a dual role as a defense arm as well.
