Yes, it’s useful to get a lot of things moved along before the the fall term of senior year, when classes, activities, athletics, etc. get underway. Also the Common App opens on August 1, and some schools with rolling admissions will start reviewing applications right from the start.
FAFSA opens on October 1. Depending on the school, you might also need to think about the demands of a CSS.
But count back from the deadlines and think of everything that needs to be in place. You’ve listed a lot of them.
By the end of junior year, the student should have a set of standardized tests in hand. This can inform a decision to hold, practice and try again, or think about a test-optional strategy. There are testing opportunities in the summer. That’s not a lot of time to prep, but it’s better than trying to fit it in once fall term of senior year is underway.
It’s a very good idea for students ask for teacher recommendations before the end of junior year. It gives the teachers more time to write thoughtfully and provides them with enough notice to plan their workload.
A strong, close-to-final draft of the Common App essay by the start of senior year (or earlier for some rolling admissions schools) gives more time to refine for submission, or to ask for a guidance counselor’s or teacher’s feedback.
Getting all the demographic info into the Common App soon after it opens helps check a box, and writing out an activities list in Google Docs or Word will help make it stronger within the proscribed character counts when it comes time to commit it to the App.
Having a clear application strategy that isn’t under continuous re-thinking and is supported by a good understanding and balance of reach, target and likely/safety schools is valuable to reducing last-minute stress. But to achieve that, junior year should have already been put to good use researching and/or visiting schools. That research will also come in handy if any schools on the student’s list require supplemental essays.
So, reduce stress and avoid time compression by understanding the workload in advance, planning it out counting back from the deadlines, having a strategy that the students, parents and the guidance office are aligned on, and being fair to the people you are depending on to help you, namely teachers and the guidance office.