Your experience really enlightened me. Thanks for that.
I also studied the K&B one time, but can not pass in the mock exams.
Most people advice two or three readings of the book and a very good score in mock exams before taking the real
test.
My advice is to not mention the score (you can mention the certification) on the resume. Tell your score only if you have been asked.
Get a good a score in SCWCD after good preparation.
SCJP is basic exam and SCWCD is what you normally use in web application projects, hence a good score in SCWCD will show you in good light.