Catman, if you read what it says in the document you can already find a hint to your answer... They ask you to read it through carefully instead of asking you to study it by heart. I don't want to say to you that you don't have to study it, you do.... but I'm sure you know everything you need to know given what you have done to prepare yourself.
Regarding the airplanes, make sure you also can put them in certain categories... which ones are larger, smaller, long haule short haule, fast flying, slow flying. Go over it a few more times and get yourself relaxed before you start the test. Nevertheless try to know as many details as possible but do not mess up your mind because you how many passengers a B737-500 would be carrying in his maximum config., it's more important to have a good idea on how many you could expect.
On the other hand, remember later on you will have to study you airspace maps. This could well be around 70 routes on which you have to know all the points (names or lettercombination which don't always make any sence to make it easier) and as well distances and headings between every point.
But as well don't worry about that too much because you will get used to studying this kind of things as well bit by bit...
Don't worry, you'll be fine, good luck