To take risk or not take risk when serving?

In other movements of beach volleyball (passing, setting, spiking, blocking, digging), you don't have too much time for thinking. But before the serve, you can think a little bit about the next serve. Should I hit the ball with full power or just make a very easy and safe toss over the net? Most of the time, the question is simplified to jump or not jump? The are several factors, that affects this decision: