Today I've passed on SCWCD 5 with a 89% score. After read the HFSJ 1.4 three times, I suggest that reading it two times is sufficient to pass the exam and it will let you have the maximum use.
I read it 3 times because I stoped to study after reading it 2 times (without doing any mock exam). After that, doing the book's final mock exam, doing JavaRanch's mock exam twice and a harder mock test from Anand Chawla, I feel confident to take the exam.
Another suggestion: never go take the exam at mondays... my brain today is slow and slack..., and it difficult me to answer the questions. A good day would be wednesday or thursday.