Chance a sad Penn deferred student for WashU (ED2), premed. [1590 SAT, 97.2 GPA]

Among your current acceptances, Stony Brook is well known for biological sciences.

As suggested above, I believe you would enhance your chances of additional quality acceptances by diversifying your list, even if this were to represent just a modest refinement to your current choices. For biochemistry / molecular biology, I’d recommend Wesleyan, for example. Or go for the superb premed advising that a purely undergraduate-focused school such as, say, Middlebury would offer you.