I would not be surprised to see what you predict come true, but my gut says 1675 is the target for shorting.
One can see today as retest of last weeks lows, and we held so far. If so, then a run to 1720 is possible. Or, I see today as indicating this rally has not power behind it, and then 1675 or less is all we can do.
Not sure which will play out for now, but leaning towards no new high on spx, new high on qqq.