High Wing - Sorry for the late reply, have been away enjoying the new year celebrations. Don't be scared of the exam, if you read the questions and answer what is set, if you are fast and accurate on the CRP-5 then you should be OK. I hope Alex's comments here have also calmed you, but if you have any more specific querries, then put them here or do not hesitate to send me a private message.
Best of luck!