A Fixed List of What Gets Checked and What Does Not

The usual mistake is to build a pre open pass by addition, one item at a time, each of them individually reasonable. After a year the pass takes ninety minutes, finishes late, and gets abandoned halfway through on any morning that runs short. The reason orb trading routine richiebranson publishes the list as a closed set, with an explicit column for what is deliberately not checked, is that an open ended scan has no natural end, and a routine without an end runs into the opening bell every time.
The Closed List

Six items is a workable size. The calendar for scheduled releases, the overnight high and overnight low, the previous day high and previous day low, the premarket range on the instruments already chosen, the platform check, and the size arithmetic. Each has a definite answer and a definite finish. When the last one is done, the pass is over.
The number matters less than the fact that it is fixed. A list of eight that is genuinely closed beats a list of four that is allowed to grow.
The Second Column

Writing down what is not checked is the part people skip, and it is what stops items creeping back. Financial television, the overnight session on unrelated markets, social media sentiment, and any scan for new instruments all sit in that column with a one line reason. When something feels missing at 9:12, the second column answers it without a decision being made under time pressure.
Adding an Item Costs Something
The rule that keeps the list closed is that a new item can only be added at the weekly reset, and something has to come off. That forces the comparison to be made explicitly. Most proposed additions do not survive being weighed against an existing item, and the ones that do are usually replacing something that had stopped being read anyway.
Each Item Needs a Stopping Condition
Check the news has no end. Read the scheduled releases for today and note the times does. The difference is not pedantry: an item without a stopping condition expands to fill whatever time is left, and it is always the last item on the list that gets compressed as a result. Write each one so it is obvious when it is finished.
The Pass Ends Before the Open
Finishing five minutes early is the design, not slack. Those five minutes absorb the morning when one item takes longer than usual, and on ordinary days they are quiet time before the cash open. A pass timed to finish exactly at the opening bell finishes late roughly half the time, and the part that gets dropped is whatever sits at the end, which is usually the size arithmetic.