Combustible materials cannot be legally carried on commercial aircraft. Plan on purchasing the fuel you need after you land.
Unless you want to disasemble an item you take as carry-on baggage, I would pack everything well as baggage. Don't even think about carrying a radio on board.
Or you could ship your gear UPS seperately.
If anything in your baggage sets off an alarm in the baggage screening area, your baggage will be opened, suspect items removed, and after a successful rescreening those items may not be reinserted into your baggage. This happened to me with a simple luggage carrying strap that was stored in my baggage.
"Yellow Jacket" Mugen MTX-6, Picco Torque
TeamNITRO RC Club, Lynwood, Illinois