I've got damn near the same bike as you, porting, swinger, carbs, etc. except I'm running 10 paddle 22" SLS haulers, but this is in very deep, soft sand. I was beating damn near every stocker/bolt-on 4stroke at LS a couple of weekends ago, granted I only weigh 135 lbs. too, which definately helps, but the dune port is awesome with the T-5's. Only thing i'd be worried about for you is only having 8-paddles, you may just spin the hell out of them.