I have decided to attempt to use the following parts for propulsion:

• Turnigy D2830-11 1000kv Brushless Motor (for moving the propeller)
• HK15138 Standard Analog Servo (for moving the rudder)
• Metal Push Rods M2.2xL300 (link servo to rudder)
• Pin Horns (connect rods to rudder)
• 10x6 Propeller Standard (for air propulsion)

It's intended to 3d print the propeller, push rods, and pin horns eventually!