I read Ruckman's stuff for only 2 reasons:

1. He's great on historical facts surrounding the KJB (not to mention how well he refutes modern "higher criticism").
2. He makes me laugh.

However, I would encourage caution regarding his "biblical doctrine". He has some good insights in his commentary on The Book of Revelation. "Eat the meat and spit out the bones". There are a lot of bones.