LARS is available over much of the route and it would be a shame not to use it......
LARS provided 3 services RIS, RAS and FIS, he used FIS, so he did use it!
surely "G-ON passing Alconbury" would be sufficient rather than the full position report
One of the requirements of the test is that you demonstrate a full position report! This is an example of one.
I suggest you read he syllabus, App A
http://www.caa.co.uk/docs/175/Sectio...%20(FRTOL).pdf look at this form
http://www.caa.co.uk/docs/33/FORSRG1171.PDF which shows the training you should have received and then decide if the money would be well spent.