I'll have to spend more time on this, but I will give you my first thoughts:
1. The premarket move could be a combination of an abc move where the subsequent Low is a higher low, followed by the DTL break. The context, I am not aware of, other than a reaction to the sell-off yesterday afternoon.
2. All I can see here is a DTOP from the overnight session, and 2 adjacent bars on the 1 minute chart also form a DTOP. Resistance here, although a 2 bar DTOP on a 1 minute chart is not something I would give great significance, but I could be wrong. Not entirely sure where the best entry point would be, since the UTL break is one third to halfway down the downward move. Perhaps there is a better entry.
The extra credit is the support found on the 18/3 and 19/3.
I am probably way off, but I appreciate the help.
1. The DTL (I assume you mean descending trend line) break is the signal. In the context of the orderly down channel, the break of that trend line sets up the context necessary for the foundation of a long trade. What happens between 9:22 and 9:25 (eastern time) to trigger a low risk entry?
2. What happens at the top is meaningless with regard to the break down later. Price is in a clear uptrend and we're not trying to pick a top. Until the common setup I have you hunting for appears, there's no reason to initiate a short position unless you're a counter-trend scalper. Something happens to cause the longs to throw in the towel and a short position initiated at that point results in a strong and significant move down. The fact that "it" happens "halfway" down (you only know that after the fact) doesn't mean it's a less-than-ideal entry; on the contrary, once a true reversal pattern sets up, the entry and the odds of a decent favorable move are ideal, because the old team is about to become weak (give back their profits if they don't start scaling out) and the new team is about to become aggressive and may even take full control.
What happens between 9:42 and 9:45 ET to trigger a low risk entry?
Once you understand this, you'll have a basic setup that produces a decent favorable move while allowing for a small stop loss more often than not (which is my definition of "edge"). (It's the identical setup for each move, by the way.)
Extra credit: You got it...support at the LTL across the lows of the 18th & 19th
