Help me pick a new motor

[SLOW]

Im looking to get a new motor for my hobbyking apparition.
Lets start with my currents setup.

Hobbyking apparition.
Turnigy 5000mah 40c 50c peak (2 2s pack in series for 4s total at 5000mah)
Castle Hydra Ice 240
Fiego 8xl
prop; i can change props, currently using an x445

Im looking to run a 4s setup (what i currently run)
want about 55 mph, currently in the 53 range.

looking at a leopard 3674 1900kv
or maybe a 4074 in the 2000 kv range.

Im thinking that the 4074 might be bighting off more than my battery setup can chew.

Im open to any input and feedback everyone may have.

[SLOW]

Anyone?

[Make-a-Wake]

55 mph in a 30"+ boat is really 6s territory........BUT, if you are set on 4s i'd try this motor. I purchased one and am very satisfied(got the 3Y for 6s)....basically a Leopard......try the 3D.

http://www.offshoreelectrics.com/pro...prod=keda-4074