For a healthy critique of this book, I encourage you to read Rev. Mark Garcia's review
No Reformed Doctrine of Justification
Also, his recent lectures at the Thirteenth Annual Lynnwood Reformed Conference address many of these issues, and I think are valuable.
Lynnwood Orthodox Presbyterian Church (under: audio-13th conference)
Not everyone in the anti-FV reformed camp is convinced the direction of this book is the best way to answer FV.