Where are the topics to be provided?
All 224 topics are public information and you can download them from ETS. There are several publishers (i know arco is one) that publish suggested answers to all of the topics.
The Arco book has some good advice and suggested templates. All of my students who have browsed through this book have gotten 5.5 or 6.0 without too much work.
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993