Definitely give yourself time to just mentally "digest." Like you, back when I was applying and ranking, my first/second and last sites were pretty clear-cut. And I also had fairly well-defined tiers. However, the specific rankings of sites within each tier (e.g., 3, 4, and 5) probably swapped places a half-dozen times before I finalized my list. In the end, I would've been happy matching just about anywhere on my list, particularly anywhere in the first tier, so I stopped putting so much pressure on myself, trusted my gut, and submitted.