That's a pretty good idea.
The Australian Defence Forces run pretty much the entire competition for their cadetship's within one week where all of the candidates that met the requirements at application stayed in the academy for 7 days. Day one, fitness test. You fail, home you go. Next day psychometric testing, you fail, home you go. And so on.. At the end of the week after each stage of testing, which is pretty much the same kind of tests that you have to do for a cadetship in the PDF, your'e left with nearly the amount of candidates needed to fill the class.
All of this is done under strict military discipline, reveille, parades, PT, introduction lectures on military life etc. and even getting shown around and shown weapons displays and the likes.
They lose just as much people to quitting because its not for them as they do from the tests. Its a GREAT system. Also, it doesn't leave the candidates in a state of limbo wondering will they get a cadetship or not for nearly half a year.
That's a whole cadetship competition, done and dusted within one week. The PDF are well able to do something similar. They could easily have the psychometric testing done in the gym in the curragh, split the candidates into groups and different groups could rotate between taking tests and doing different things on different days. For example, group A be could be doing group tests on monday, while their buddies in group B are in the gym doing their psychometric tests.
Not only is it quicker, and better for the candidates and the selection process, its probably WAY cheaper too.