This model was made for the purpose of a try if 3d print can fly.
But you know it something has to be a simple and then it and like a different story :).
I hope you will like and tell me if it flies if you print it.
If you keep the original size it will be better to use 0.1 mm layers.
No supports are needed when the model parts are correctly positioned.
infill: 20% for a body for wings you can try 0% fill and more perimeter wall count but it|'s settings for purpose of a try if is it possible for this model to fly. For normal use 20% on body and wings.