I have had 10 flights also.Ive got mine in a wot 4 for running in purposes.It weights 5.5lbs and will just pull out of a prop hang very slowly.Im using the 12x6 prop and getting 10700rpm on the ground and am on the rich side.
The engine pulls the plane very well in the vertical climb but is not unlimited but gets to at least 400m height without slowing.
Id really like to find a 3d plane to put it in.im not a huge fan of funfly models (mainly because i like to mix fast scale aerobatics with some light 3d )i think that funfly models are probarly the best option if you want a 3d capable model.
Got say im impressed with the engine so far and it may find its way into a warbird