So why not prepare both versions (beginner or realistic) and switch them at startup with a checkbox (like a possibility of nuclear warhead or non-historical scenarios)?
double work
Hpasp Free SAM Simulator, "Realistic to the Switch" (U-2 over Sverdlovsk, B-52's over Hanoi, F-4 Phantoms over the Sinai, F-16's and the F-117A Stealth bomber over the Balkans.) http://sites.google.com/site/samsimulator1972/home
