I run 8 paddle scat's on my built 880 Teryx and they work great. I think also UTV Johnny was running 9 paddles and still hit 75mph.I'm looking for fast dune rides. I'm 99% sure that this thing has too much power for a 7 blade. Sounds like 8 blade for a hill shooter should be the ticket. But again, I have no experience with any of them. Also, I do not like the price of the Blasters, so I guess I'm really wondering if I will be happy with the Skat's?
I think you'll be fine with an 8 or 9.