RMH 9 thru 21, Appendices E, F, G all of which you would have studied already
Section 8: Security
Section 9: Developing Web Services
RMH Chapters 22,23,24
Section 10: General Design and Architecture
You can read each pattern in Core J2EE Patterns book and some GoF Java Companion Book. or MZ's guide read it in a nutshell.
To fully appreciate design patterns, you have should have used them somehow
Section 11: Endpoint Design and Architecture
Sun Blue prints on web services - Bu sure to read about Interaction Layer and Processing layer and about Correlation ID to implement Statefull web services
I have purchased whizlabs software which helped a lot.
Bottomline is that first try to read RMH end to end without bothering about objectives. WSDL, UDDI will be a nightmare for a while. After reading for a couple of more times, it should be ok.
After done with RMH, read bluerpints, MZ to round the objectives.
I expected around 80 before going. However I got a bumper prize in Security 100% thanks to MZ. It pushed the score beyond my expectaions. I got 62/69. I missed a couple in XML and SOAP which I feel bad.
It took me 3 weeks in total with one aggressive week.
I have studied Richard Monson Haefal's book for about 2 weeks with probably 2 hrs a day. This was the key. MZ's security for 2 hrs. TrAX 1 hr. BP 1.0 1 hr. Sun's blue prints on web services 4 hours
As a J2EE developer, all except SOAP, UDDI, WSDL ust be easier. However all of them depend on your understanding of above. Hence try to put 50% of your time in understanding XML, XML Schemas, Namespaces, SOAP, WSDL, UDDI. Remaining must be cake walk.