Hi,
While our curriculum team is working on adding more 700-800 level questions to our question bank, we currently have a limited amount of these advanced questions. If you perform very well off the bat, then you will end up answering all the 700-800 level questions and the system will give you lower-level questions. I would say that if you've exhausted all the advanced questions and you're scoring well on the CATs, then you're ready to take the GMAT.
If you do decide to start a third round of CATs, keep in mind that you will see repeat questions from the first two rounds. My advice to our students is not to take CATs too frequently. CATs can serve as a very important study tool. You should try to take the time to go through your Assessment Reports in order to analyze your performance. What type of questions did you get wrong and why? For the questions you answered correctly, did you answer the problem in the best way? Would you be able to answer a similar problem with different numbers or using a different approach? I think that using the CATs in this manner will definitely help you study.
For more study tips regarding CATs, take a look at the this article in our MBA Resources section:
http://www.manhattangmat.com/articles/e ... -part1.cfmPlease let me know if you have any other questions.
Best,
Matt Mapplebeck
Student Services Associate
Manhattan GMAT