Just got back 30min ago, Passed with 91%! Thanks everyone for your kind words and invaluable advices in this forum. I really appreciate it, lot easier to study with a group than by myself.
Since I cannot talk about the exam itself here. Here's a short summary that I think can help people preping and taking SCJP 1.5:
+ useful material: Dan Chisholm's Test Suite (1.4), whizlab (although they are too hard in some areas), of course, Bates book. Don't neglect 1.4 stuff they useful for exam.
+ useful tactic: I do 5hr paper study then 1 hr coding to review the stuff I learned and get use to syntax. Quite helpful for recognizing bad syntax on exam and API fill-in questions.
+ on exam: Honestly I found the exam to be difficult, so the one thing I found out you better try to do is skip all tough ones in the first pass. I had about 15 leftover at the final hour which to me just bonus. At that point I knew I did enough to pass so wasn't as nervous about solving them actually solved a bunch of those I wasn't able to do first pass.