hmm, I agree that the pot should be used after Impulse Drive. obviously, the rotation you've been working with for oGCDs doesn't work if you just move everything back a step (you don't want to pop BotD after Impulse Drive!)

here's what I'm thinking for an opener without a pot:
HT -> IR + LSW -> ID -> BL + B4B -> DIS -> PS + BotD -> CT -> DFD -> 4TH -> Jump -> Phleb -> SSD -> TT -> GK -> VT -> LS -> FT