I don't see it going to $350 under any circumstance.  If the rally is over, which it might be for a while according to macro wedge breaking trend, then it would find strong support around $410 still.  If there's a dump, that's where it will go.  If a second dump occurred days/a week later after that, it would find big resistance again at 390's.  Worst case scenario would be $360, but would probably require a long time to get there, and by the time it did, would be time to go up again for getting closer to halving.