It seems all the Genesis owners want to keep their secrets to themselves.

I don't own one but I have helped a guy set one up for racing.
With that motor & ESC we could successfully run an X440/3 or X642 on 2 x 2s 5000mah 40c (min) packs in series for 4s.

The search button is your friend. There are many threads on this boat. Have a read through some of them & you will gain some ideas.

http://www.rcuniverse.com/forum/search.php?searchid=904042.

Cheers.
Paul.