$SOL Currently around 84.200 USDT.

I'm not looking at the ups and downs first, but whether this position is worth taking.

This kind of position is the easiest to get emotional about, so I’ll put discipline first:
First, watch if the 5-minute chart reclaims the key level, the 15-minute chart reclaims the sweep high, or if a break forms a higher low—that all counts as invalid.
Next, a waterfall pattern should quickly make new lows; if it doesn’t fall fast, it’s not a strong waterfall.
Additionally, not every fluctuation is worth participating in.
Finally, if the position is wrong, even if the direction is correct, it may not be profitable.

I will monitor the entry point: 84.874 USDT
Estimated target price: 79.822 USDT
Stop-loss reference: 86.894 USDT

The most expensive thing in trading is never the stop-loss, but refusing to admit you're wrong.
Markets happen every day, but your account can’t bear the load every day.