Fael...
1. Im guessing you can select any aircraft you want for this mission. Just be warned if you select something (say the VRS), EVERYONE has to have it. Otherwise strange things will happen. Ull stay the same but if others have a default Hornet, they will revert back to the Blues paint and back and forth.
2. I dont think its a single player mission, but you can simply load it on startup and not broadcast it or dont allow others to enter and it ends up being a single player.
3. Not sure, definately have to ask Orion.
4. No aerial refueling. When I asked Orion to alter his mission, I specifically asked (and he delivered) no refueling planes, since we came up with multiples and other errors. Also, the flight path would be weird, since to keep the WoD (wind over deck) component, the carrier course (~250 deg) and wind direction (~238 deg) have to be steady. This makes pattern work much more consistent with real world carrier patterns.
Hope that helps a little
Sludge