Here's what I recommend
Get an engine in the .46 (2-stroke) range and you're good to go. The Futaba 6XAS is a very nice 6 channel entry level PCM computer radio. Never had a single problem with it.
I got back into R/C after a 23 year 'break' and I'm very happy with the Avistar/Futaba radio combination. The plane flies very good, even on fairly windy days, with its semi symmetrical airfoil. I can't say enough good about the Avistar as a trainer.
Good luck,
Scott