A. If you pop open the Project Opensky utility panel, you can turn the aircraft's ground service equipment off.
B. I don't know if GSX has a configuration for the Project Opensky 747 by default. You may check here to see if one is available:
http://www.fsdreamteam.com/forum/index.php/board,51.0.htmlKeep in mind that with the way Project Opensky's aircraft are set up, each plane has its own folder most likely, so you'd have to configure one for each one. Alternatively, if you already have one set up that you want to use, go to C:\Users\(Your Username)\AppData\Roaming\Virtuali\Airplanes, copy the one you want to use, paste it, and rename it to whatever your aircraft is called. So if the aircraft folder name is called "Boeing 747-400F Lufthansa Cargo", you want to name this folder "Boeing 747-400F Lufthansa Cargo."
C. GSX only has three. One main deck cargo loader and two lower deck cargo loaders.
D. Negative. You're trying to get it to do something it wasn't designed to do.