You'll also need connectors ( e.g. male and female PowerPole, Deans, or whatever you prefer ), Servo Extension wires, CA, maybe thick cable ( red and black ), maybe motor standoffs, at least 4mm male and female bullet connectors, heat shrink tubing, a soldering iron and low temp solder, a "Y" cable or two and the appropriate tools.
The motor comes with the prop adapter, but you may also elect to add a spinner or on that plane an authentic looking spinner "hub" ( I would! ).
I recommend that you leave OFF the wheel pants as you are new to this, and also replace the included wheels with 20% bigger ones for better handling on grass.
Make sure you drip a good bit of thin CA into the wheel wire mounting area before installation, and take the time to harden potential stress areas with thin CA.
No switches nor RX batteries are required as power will be provided by the BEC.