Standardized Testing. Again?

For the first time since the fall of 2005 I will be taking something along the lines of a standardized test.  This test is the Foreign Service Officer Test and is by the same company that did the ACT.  This brings me back to my Junior year of high school which was the last time I took the ACT.  I got the score I wanted and I was done.
This time the stakes are a little different.  Rather than my score determining which College I will go to and how much scholarship money I'll be able to get; this one is the first step in the application process to be a Foreign Service Officer with the State Department.  Should I do well the application process will continue with the average application process taking around 18 months.  This test appears to cover a wide variety of topics, with one multiple choice section being on English (Much like ACT English), one section on yourself, an essay, and one section on things from Economics and Management, to World History and Geography.  Trying to study for this test has been difficult with the reading list of things that might help being four pages long.  None the less I have been reading from that list for a while and tomorrow I shall find out if I read enough.  Should be fun!