Well, I personally believe that while Qi is not a concern per se (we probably outclass Chu Song enough to win even with a bad strategy, though it worries me) it's still inefficient.
@yrsillar, you would have told us if Ling Qi noticed Chu Song was appraisal right?
Beginning on the fist turn with OwS+GCD+OtW+Twilight Beauty Means using 4+3+4+1 Qi in the first turn (12Qi) while disengaging from combat, meaning we probably won't get Qi regain. From then on, there is the choice between using all our instant defensives techs while trying to stay stealth far enough we can set up either an ambush or a perimeter (the actual vote is not actually setting up our perimtre, just an ambush) and not doing so.
If we do set up our defensive techs, this probably means having to use 2-3Qi/turns (depending on whether we need to continue using Twilight Beauty), but if we don't, it means that we can get a Chu Song in our face bashing our head in at any time.
So basically, shadow plan more or less either decide to gamble Chu Song can't bash our head in while we don't have most of our defensive suit, or else decide to begin our 'ambush' when we are ourself maybe at half Qi.
Considering we don't actually gain anything by doing said ambush combat-wise, this is more or less deciding to throw away half our Qi for no reason.
EDIT: Oooor... we could use a pill before the ambush. Still need us to actually never get seen and be able to have enough time to set up said ambush, so a gamble that doesn't give us anything, but at least there is an 'out' for the Qi.