Just be sure to turn on the prop AFTER the line falls away.....
Even larger EP models require a healthy push. If you develop a taste for the larger and heavier models you may need to arrange a short rubber only or rubber with short line sort of bungee launch that shoots it up to flying speed and falls away before you turn on the motor. Otherwise to launch a 3 lb 2 meter or bigger and heavier needs a lot more than a snowball's sort of push to ensure it is at or darn close to flying speed as it leaves your hand. The good thing is that it would provide something to push against so it may not be as painful as basically throwing a "nothing".
Or you make it a point to only fly on windy enough days that you can throw the model into the wind so you only need to push it lightly to have enough air speed.