Maybe I can help OP. My SAM is about ilvl 335, and I've been able to beat the 05S dummy with 2-3 seconds to spare using a Byakko weapon. As a result of my gear, I have ~1800 SkS and mid 1200's on crit and DH. My opener goes Kasha combo > Hagakure > Gekko combo > Kaiten+Meikyo > Higanbana > Yukikaze+Guren > Kasha > Gekko > Kaiten+Midare then proceed as usual, throwing out Shinten's as needed, and basically using Hagakure on CD (usually 1-2 Sen, sometimes 3). I like this opener because it gets Hagakure, Meikyo and Guren on CD pretty quickly, meaning they're up more often over the course of a fight. I'm not a pro SAM by any means, but it works for me. Hope it helps and good luck.