RE: lesson learned.
Exactly. I finished my Harrier 90 today, but it's cold, windy and there's snow and ice on the ground so I took out my Easystar instead. I had a blast in 20+ mph winds, landing on the ice, taking off from a stop on the ice, etc.
Wait till you get pretty comfortable flying, and those electrics will still give you plenty of fun on a rainy (or snowy!) day.