leave the prop in for now, its a huge upgrade from the older stock props. its large hub and SS. i will comment to you how i like the stock prop with drypipe and head tomorrow hopefully
you will also need to switch to a pre 08 or aftermarket handlepole along with a pre 08 steering cable to get enough steering throw for freestyle.
mike your ski looks sick even though its a yami...i am coming in this weekend to work on mine i will have to check her out.