RE: dumas dauntless
You will need two good sized motors to run her. Look for at least 700 sized motors to get her to perform. The Dauntless is going to take you some time to build so don't worry about running out to buy motors right away. Even a fast builder will take a few months to get her to the water. If you can save $10 a week then you should be able to get a nice pair of motors, speed controls, etc once she is built, painted and detailed.