We already live on an ocean planet; minimal change
Earth is already 71% ocean on the surface. The Southern hemisphere is 80% water. The Western hemisphere (i.e. the Americas) is 83 % water.
All in all, your world is not much different from the Southern or Western hemisphere. Anything you see on Earth, you could see on your planet. You aren't likely to see weather and climate conditions that you don't see on Earth.
Incidentally, to answer your questions bullet by bullet:
- Hurricanes are less powerful in the Western Hemisphere and almost non-existent in the Southern.
- The Southern hemisphere's monsoon (Northern Australia) is weaker than the Asian, the Western Hemisphere's monsoon (Arizona to Mexico) is much weaker and incomplete.
- The Western Hemisphere (especially South America) is much wetter than Eurasia, but the Southern Hemisphere isn't, since Africa and Australia are pretty dry.