If you managed to catch an entry around 287.3 (I haven't, was busy with another trade), 273.9 is a level to expect a reaction, set an alert when the price crosses it, just extra vigilance.
노트
As per the original idea, BNB almost reached the short target of 273.9 (actual Candle Low was 274.2), that's about 0.1% MOE, which is pretty great. Price bounced towards 302.5, an untested level from the original thesis. Overall, I consider this a successful setup, which gave a chance to enter a Short and a Long trade relying on the charted targets.