I broke down and called today to ask some questions about the process. They said that they do EDP first, so they've only just begun reviewing non-EDP, with interviews only starting to go out last week. We know that's not strictly true since there are several non-EDPs who got interviews quite a while ago, but they all seem to either have super high stats or have done the UMass summer research program (which I think basically means you're a shoe-in for the interview), so maybe they are the limited exceptions for early review. Anyway, it gives me hope since she said things are picking up now and I was complete quite early.
Thanks for listening to my whining.
I think you are fine. I don't have super-high stats but applied EDP, and I applied last year, so they probably interviewed me early because they reviewed me for EDP and felt bad when they didn't take me.
BTW, I traveled from Woburn, MA, and I budgeted 1.6 hours for the trip. It ended up taking me 2 hours with traffic. I was about 0.5 hours late but luckily there is a 45 minute buffer time before the first interview. Thank goodness, the admin staff were very understanding.