OK, to start off you need 3 mods for this, yeah I know I went waaaaaaay overboard with the mods, but it makes it look nince. first off, you need fire and forget guardian, second off you need VTECH multirole explosive, next off you need HUD. Ok now that we're done with that, let's get to the activation groups.
Controls:
regular SimplePlanes controls
brake for airbrakes
activation groups:
ag.1 is the ejector seat (be sure to deactivate ag.8 first)
ag.2 a small parachute to slow you down
ag.3 after you've slowed down activate this, that's your big parachute
ag.4 this changes the display type on the hud
ag.5 this makes your multi use explosives rockets
ag.6 this makes your multi use explosives bombs (only have one activated)
ag.7 this is the drag chutes
ag.8 this is the pilot and weapons officer's gyro, for falls

Have Fun