@Quackerhonk:
Suggest you look at FT"s Halloween at Edgewater video from time of 5:55 to 8:33 and I give a thumb's up for those 3D planes.
View attachment 254219
This model came out 20 plus years ago. Used FFF and it locks in nice with some small changes I added.
1) When doing knife edges, made the area above the wing (fuselage) equal to area below reducing the coupling effect especially going from left to right.
2) Next used 3 servos(reduce weight) rather than four.
3) In nose, made a wider area so tail end received more prop flow when hovering.
4) Increased prop diameter by 1" and when nosed down, acted much like a brake.
Those are well designed.