RE: WM 330 and YS 110
You will go nuts with the YS110 on that plane. My pal has one with the TT120 2C turning a 15x6 it was really superb. Now with the YS110 its lighter and you can happily turn a 16x6 at about 9,700 RPM. Your vertical will be awesome. My pal's plane can turn a 16x6 but he preferred the 15x6, I had a few flights and it was nice. Only problem was the plane was nose heavy because of the TT120. The YS110 will be just right. However, that sort of power is really fun for 3D.
The YS is a superb engine, trouble free ... if there are leaks then you will not get her to run right, I had a leaking gasket when I took the engine apart ... that was the only time I had problems. First start of the say is always with a starter, after that, I only back flip!