Prather cat II conversion to Electric

[Red Cat II]

I am currently converting a a Prather Lap catII from 7.5cc to Electric. My specs for far are the old lower end K&B, 7.5, the motor I am using is Proboat 1500kv, Flycolor 150 amp ESC, Battery is Powerhobby 5200mAH, 50C. The prop is a brass prop two blade 2 inch in diameter ( not sure how to find out what the number it is). I am going to run this as a sport boat and will not be using for racing. Since I am new to this sport I was wondering if that anyone has done this and could tell me if the components I am using are correct for this boat. Also does the battery have to be waterproof and if so can you just put it in a water tight box in the boat

[Jesse J]

Photo? 1000 words you know.

[JestDanny]

most props have the number stamped into the face of the hub, some times this number gets mashed up by the prop nut, makes it hard to read if a silicon tube spacer is not used between nut an prop,. Remove prop see if any numbers left on it?