John, what you recomend is exactly what i did not doo!!
I had 3 mins on my panther (without paint and detail) with an AMT engine before i got to Hungery
it was painted a couple of days before the comp and the engine changed to a Jet Cat 160 (never run until my first practice flight!)
I fitted 1 Gyro whilst in Hungery but only on the Ailerons (would have done better with one on the rudder but not totaly needed)
i was 44th in static will a lott to make up in the flying. (i only new i was flying there 1 month before as i was a stand in for someone who dropped out)
in hindsight i think that i will make maximum effort to build an accurate scale model (outline) and learn how to speake German, and move to Germany and get a German Passport
Dave Stephens