Mornin' Tiff ! Check the TOWER catalog... They have a six channel Futaba outfit for $149.99 which includes everything you'll need for your plane ( less engine). I wouldn't go less than 6 channels ! The radio model is :6YG Skyport 6 Channel, FM System.
The Thunder Tiger .46 Pro is a good choice, but they also make a .42 size witch is about $50.00.

Ugo