If it is not, or there is a pitch and thrust that can establish the airplane in a safe flight path (be it level or not) then we should know those settilngs by heart, and they should be included in the memory items of the procedure
Pretty difficult for memory settings, given the wide range of types / weights / engines one can fly.
However, at Crz levels, I would suggest the safest option might be Idle and 0 - 1nd, this seems to fit the drill power / pitch for descent, and is getting you into a safer zone i.e. down. Going up is just causing you issues with Min/Max speeds increasing.
I would still maintain the biggest issue with UAS is not "dealing" with it. It is recognising it, getting your colleague to agree, and then executing the drill. I believe most of the accidents have never really got to that stage?
NoD