I got the thunder tiger 40 (not 60) for my son to learn on, and there were several problems with it (fuel tank not on carb centerline, aileron torque rods sloppy design, covering cheap) and so I dont recommend this line of ARF trainers for beginners. The Sig LT 40 is a great choice for a first trainer. I would recommend any 46 size engine (thunder tiger 46 pro is very good, OS 46 ball bearing (AX) should also be good. The Sig LT 40 is a little bigger than other trainers and so I recommend a good, strong motor. For the radio, what you've picked out looks fine (futaba 6 channel, not a computer radio). If the guys at your field use futaba a lot, that is even better.

peter