It’s a matter of how much money do you want to spend. A hobico Hobbystar .60 size or a Hangar 9 Alpha trainer would be my personal choice.
About the engine I would choose the OS 75 AX (expensive but good) or the Tower Hobbies 75 (cheap and not so good)
Regarding the controller I would go with the new generation of 2.4 Mhz type of radios. Airtronics has the cheapest one and Futaba or JR the expensive while Spectrum has been a good choice for a good amount of people here.
Depending on the price, Omega fuel is a great choice in the range of 5 to 15% nitro.