Sometimes I set the reverb pre-fader and close the dry fader and open the aux fader,then during mix down,open the dry fader or unmute it at the desired time and mute or close the wet aux fader.I don't know if this is what your looking for.You may wan't to reverse the reverb.
I'm not sure how you would do it on your set up.I have reverse reverb as a preset on my effects unit.It sound like your on the right track though.Experiment with doing that and see what happens.