Various test flights have determined that if you ever want to fly around Kerbin in one go (without intermediate stops!), you need one of these:
1,550 Liquid Fuel
Two J-404 Panther jets
Flap/spoiler hybrid surfaces
(these ^)
Flying range (under right conditions): At least 1.3 times the circumference of Kerbin, according to a simple calculation I did with my remaining amount of fuel after my record-setting flight. (just after landing)
Action groups:
1: (Engine) Switch mode
2: Toggle Engine
3: Extend/retract flaps/spoilers
4: Retract air brakes (preferably after stopping) DOWNLOAD Note; For best flying performance and stability, consider installing the Pilot Assistant mod (for KSP 1.3) Any questions? Hit me up!