I would use both a GPS and the ET data recorder to find the fastest most reliable set up. ( Prop Selection ) No one here is going to be able to accurately tell you what prop would be best. The data you collect from those tools are great - Use them to your advantage.

Also, I would use the under drive gear ratio as the hull is a bit big for the motor. The 8XL or 10XL on 5s should be decent enough. Now start testing props!

I wouldn't mind seeing the graphs and comparing for the props you use

Ryan