Simple!
Stick to the main Airports in Spain e.g. Malaga Alicante etc (met taxis hotels etc all easily accessable).
Flight Plan required for every flight in Spain (No problem).
Not allowed to fly from Spain to Gibraltar (or vice versa).
Debatable as to whether to leave your aeroplane overnight in Tangier (we wouldnt!).
Travel anti clockwise around Spain for the tailwinds ( land mass Low Px due heat in Summer).
All very easy.
UV