Simply beautiful work, Saramos.
Your work is a fine bit of inspiration for my Mustang project.

Have you tested the RCV with that 4-blader? How much thrust
are you getting? I ask because I was thinking about my Mustang
project which will use an RCV SP engine, and it occured to me to
perform the first flight with a 2-blader, just to be safe. Then after
I'm sure that all the miscellaneous bugs are worked out of the plane,
I'll start to slowly reconfigure it with the 4-blade prop and then with
the whole fan cooling system that I envision.