I have a sv27 and have modded it quite a bit. Should easily make that bud boat fly.
I am in the process of putting a sv27 motor in a LS10. Not sure if it will be a good 4s or 5s motor, but we will see. It is a 6 pole motor and a quark esc will turn it well. It is about the size of a feigao s can motor, the rcm s heatsink clamp fits just fine.