this is what I run but in 25'' and my mav scoots !Barb... Run 8 paddle Skat Trak extremes in the rear and buffs up front. You don't need paddles, razor backs or anything else up front. You don't need any more rear paddle than that unless your turbo'd or totally tricked out power wise. Get the big ones (26" I think) & you will haul ass and love the ride.
Sand conditions make a huge difference, here the sand is super heavy and not very deep. Basically if you have the power to turn them without bogging down then you can benefit from the extra paddles. There's not much of a concern about digging down since there's about a 6" layer of loose sand then it's a little harder packed sand under that. You think then front/rear combo is overpaddled? You should see some of these drag bikes running around here, 13-15 paddles is the norm.Looks good, i have a friend that run comp cut paddles front and rear. I have asked him to post some of his videos. The sand condictions makes a big difference. One thing to think about is the guys in Iceland run paddles front of rear, so run what you think works.