The props of choice right now seem to be the 440/3, CarbonFiber42, CF45, X/M445, X/M447, X642, and CF48. Migt be some others, but these are the ones we've been seeing the most talk about. These will all significantly increase stock config speeds from 30mph up to 42mph. Also dependant on the type of packs you will run. Cavatation and the amount of cavatation will be dependant on the setup and prop. Remember, cavatation isn't necesarilly a bad thing. I advise you read through the forums and see what's what.

The manual, which I think you can look at from Aquacraft, also lists recommended props.

Welcome to the threads. You'll have to search online for the best price.

I like the yellow SV. The color really snaps in the water.