I second the above comments. You'll be given all the material you require and you'll be given ample time to study it. There is zero points for knowing more, and it could well be more trouble than you think it's worth. Getting a hold of documents like that could very easily raise some integrity questions that you just don't want. If you were supposed to have it, it would be given to you, but also to everyone else. If you have something that others don't have, regardless of whether or not it'd help you, you're opening a can of worms best left closed.
If you go back through to around page 111 or so, you'll see "Markoshark" was carrying on about people having access to material prior to Flight Screening. His arguments were completely unfounded and ill informed, but you will see the opinions of the wise old heads that relate to this sort of stuff.
You are much better off preparing for the final phase of testing by being across current affairs and getting what ever life skills and experience you can. This is your one shot - having your head in the books when you don't need to is not the answer. Make yourself as competitive as you can, but competitive in the right way. Knowing the CT4 Flight Manual for Flight Screening is akin to knowing how to solve a Rubik's cube in less than 30 seconds - great party trick, s*** for everything else.