I am thinking of buying a new H220ss ,I can get a great deal on one with a volvo pent 5.0 dual prop 270hp.I am concerned this boat may be underpowered .Should I go for the 5.7 ? Does anyone know the top speed with a 5.0 dp? I currently have a 2006 sea ray 205 sport with a 5.0 220hp,can I expect...