I was lucky to buy a kit of the Slo-mo-shun VI that has already been built. I only need to install a receiver and some suitable batteries. I might also need to do some experiments on propellers. The model already had a Robbe ROXXY 950-6 BL ESC.
Then I have done some investigation on the motor. I believe it is a Hacker C40L - 8, giving it about 3750 kV. From what I have found, it should work fine with 3S LiPo.
The first thing will be to get a receiver so I can control it.
I'll post some pictures of the boat when I get around to it.