Lads,
Many thanks for the feedback and input, especially Luftwolf for taking time out from your Readme to answer.
I think I'll hold off on the realism mod for a little while and get the hang of the vanilla version. (Mmmm vanilla-ey....)
Moose1am, I was thinking of doing something similar myself. if you'd be interested in comparing notes or swapping practice scenarios, feel free to drop me a line.
All the best,
P