No, I would use flaps. I want more lift, not less, and I don't want to be pitched up hanging on the engines either. Flaps will keep me under 5 units of alpha, and I can go as slow as I want.
Idle on my big baby is less than 12%, but I still have to ride the brakes to keep from rolling most of the time.
Same as a bug smasher. I suppose speed breaks would be more appropriate that a spoiler (If you needed to get rid of drag fast and climb).
BTW, how long would does a GE-90 (and those similar commie motors) take to spool up to 85%? I gather that spool up time isn't so much an issue in a microburst due to excess thrust.