Cooling Fan: 30% power after 1.5mm have been printed.
You might want a piece of 6mm carbon tube to stiffen up the airframe, there's a slot to insert it, but at this size, it might not be required.
Total Printed weight I estimate to be ~360 grams, and total weight with all electronics and battery to be around 560 grams.
I can`t think of a cheaper way to build an ultra-durable RC plane than by using two very tough materials: coreflute and pool noodles, along with some simple tools such as scissors and an old...