What Fangs said. Don’t worry too much though.

Different bases/equipment go junior in different classes. One man’s trash is another man’s treasure. There’s still a chance you can get one of your top choices even if you’re junior in your class.

Delta doesn’t publish a “drop” in the sense of allocating a specific numbers of choices. They will just list bases and equipment combinations and have the ability to award as many or as few as they like of each (within the PWA limits of what was available after the last AE)