since eagle dynamics is going with the C model, I would imagine most of the stuff would be declassified. However with the A-10C, Waggs said in an interview that they left some stuff out at the request of the Air Force. So there might be some things left out however it shouldn't affect the realism of what is implemented.
Also while I have been flying the M-2000, i have to agree that the f18 is the most interesting of the modern sims they have planned... After all it's a multirole fighter that can use aircraft carriers as well, I don't see why it wouldn't end up more popular than the A-10.