As you proceed with this, some info: I did experiments with near race skis and wider on piste carving skis for use in "non-ideal conditions" - off piste, soft snow, mild bumps, uneven and skied off) repeatedly over a few years and found that I consistently preferred most of such skis, for that use (as well as on piste, surprisingly), with a plate but with an all mountain binding (instead of a race binding or near race binding.)
The wider the ski and the more versatile/playful such ski could become potentially, the more I preferred such a setup.
For instance, with the Head iSpeed World Cup Rebel Race Department 180/18 (Franz Klammer's favorite ski), I found I preferred (for the use you suggest) a race plate combined with an all mountain binding; or instead just an extra tall demo binding, such as the Tyrolia Demo AT binding (the height of a regular all mountain binding plus a plate).
P..S. Of the brands you mentioned, I preferred the Deacons and the Curv.
But the Heads were my favorites; and next the Stockli Lasers.