For a first rigger they are awesome. Some points to consider are

Pro
Really fast for their size
Handle like they are on rails
Always draws a crowd
Quiet
Easy to build

Cons
They need FLAT water, even small ripples upset it
With a metal prop the motor does get very hot and cannot run a full battery without some cooling time
For its size they are expensive by the time you add hardware, batteries, radio gear etc

So its up to you but I really enjoy mine the only bad thing is I don't get to use it enough.