A clear break and close below 154.75 gives a strong sell signal. A bounce here to back above 155.75 could signal a reversal and the start of the final leg up of what could then become a with the neckline at about 164 and a completion of this pattern at around 171 - 172.
To support this long position we have the and being oversold on 4H and Weekly. Especially the 4H is heavily oversold.
The candles also indicate a struggle going on at current levels (154.75 - 155).
I've taken this as a key support level, looking for that reversal, i had planned to start scaling in on the short side when it retraced back to the 164.5-167 zone back in mid march, but it never fully got there.
I've entered on the long side with my SL at 154.00 looking to target the 165-167 zone.
Your target zone at 171-172 being the upper trend line is a good point.
All the best.