@Kow: Well, I have been playing regular flight simulators, such as MS Flight Sim, Lock On and many others.
@SargeMT: The beginair also looks very good. Is there a site (preferably Belgian) where i can buy it?

As promised, these are some pictures of the place where I would like to fly. There is quite some space, but it might not be sufficient for high-speed runs . But would it be possible to do some slow flying there? For the spicier flying, I'll just go to some field in the vicinity.