Need Advice on Research (Paul and ethics)

In the next section of my research I am working on, I am doing a whirlwind tour of Paul’s ethical framework.  I aim to read the top 15-20 books on the subject.  I have created a rough list, but I was hoping any of you ethicists and/or Paulinists could draw to my attention other books.  Please note, though, that I am not interested in any specific ethical issues (homosexuality, abortion, death penalty, etc…) and I only want to deal with the problem of the ‘law’ within a larger interest in ethics (and not soteriology).  Here is my list:

1. W. Meeks, The Moral World of the First Christians (1986)

2. V.P. Furnish, Theology and Ethics in Paul (1968 )

3. A. Verhey, The Great Reversal (1984)

4. F. Matera, New Testament Ethics (1996)

5. R.B. Hays, The Moral Vision of the NT (1996)

6. B. Rosner, Understanding Paul’s Ethics (1995)

7. E. Lovering and J. Sumney, eds., Theology and Ethics in Paul and His Interpreters (1996)

8. P. Sampley, Walking Between the Times (1991)

9. D. Horrell, Solidarity and Difference (2005)

10. W.P. Brown, Character and Scripture (2002)

11. R. Burridge, Imitating Jesus (2008 )

12. B. Brock, Singing the Ethos of God (2007)

What else can others recommend (specifically on Paul, but ethics in Paul on a broad level)?