<p>There was that wonderful book by that Harvard dean (name totally escapes me; ah, the wonders of old age) based on surveys of several thousand Harvard graduating seniors. They reported that the single most important educational experience of their four years was living and interacting with a diverse group of close friends and associates. They ranked it (as I remember) above classes, professors, research, extracurriculars, etc. </p>
<p>Just something to keep in mind. Good luck! (and remember, nothing is irrevocable, and things change!)</p>