RE: Need Help With Engine Choice
If you have LHS handy, go and ask to see both Futaba and JR 6 ch radios. I suggest a 6 channes because on the offhand chance that you decide r/c flying isn't for you, you stand a better chance of getting some of your investment back with a 6 ch radio than a 4 ch. Look at both Futaba and JR, handle them, play with the programming a bit and see which one you like better. They're both very good. You would also want to check out your local field(s) and see what the instructors are using, although I'll bet you find a pretty even division between brands.
As far as engines, all the Evo engines I've seen have been strong reliable runners. I also have an OS .46 AX on a plane and it's fantastic. Might be a bit much on a trainer...
Andy