6 SAT subject tests is overkill and you don’t want to give the impression of being a robot concerned more with scores. Try to make your essays reveal your true nature and why pre-med is meaningful.
Since you mention Asian as your ethnicity, break out of the test taking stereotype. Is there anything special/extraordinary about ourself that a Dartmouth adcom can see in you that warrants admittance?
Given the nature of college admissions, it’s best to cast a wide net and add safety schools.