Why move the whole prop and motor fighting gyroscopic forces?
Those blades look a lot like standard 450 (ish) rotor blades so why not just use a swashplate / rotorhead setup?
Sure you need a longer axle and a kind of secondary firewall to mount the servos but the resulting setup will be much more faster and accurate then moving a spinning motor and prop disk.
Also then with a flight controller you could have hands off (inverted) hover and all the other things helies can these days.

Here is a crazy idea; take the main gear of a trex 600n,the bearing blocks and head (flybarless dfc version) and then drive that gear by 3 .30 heli engines.
A pair of these on a "Vought V-173" and you can do some seriously crazy stuff.
6 engines controlled by governors on tuned pipes (becouse why not would make a intersting sound