As I said, the plane normal to the weighing about 6 kg.
When you add retracts (300g), strengthening the wings mounts for retracts (xxx g),
the engine (at least 800 g heavier), glassing and painting (400g), additional sevos (total 10) 3s lithium battery, voltage regulator.

There is nothing special in this plane. Hope tomorrow will be able to finally put it on scale so you will all now verdict.