And another thing about the Epistle of James: it wasn't accepted into the Scriptures until the 4th Century AD. Think about it: for 250 years there were letters and stories circulating that Christians took as their Scriptures, every bit as inspired as the Torah, Prophets, and Writings. But we have no record of anyone--Polycarp of Smyrna, Ignatius of Antioch, Justin Martyr, Irenaeus of Lyons, Clement of Alexandria, Tertullian of Carthage, the Muratorian Canon, or Origen--accepting James as Scripture. Check it out at http://www.ntcanon.org/table.shtml. These people either shaped, or reflected the shape of, the early Church. Maybe they recognized that James and Paul don't mix.
If they didn't consider it part of Scripture, why should we?