As a rule for all FC3 level aircraft (and even the full blown jet modules) these are the primary bindings to map to joystick or throttle as you'll reference them often and usually under stress!:
1. Target Designator Cursor (TDC) Up, Down, Left, Right - put this on a hat switch. Yes, even if it means banishing trim control to the keyboard; you'll use TDC control more!
2. Weapon Select
3. Airbrake
4. Chaff and Flare dispense