Thanks for the input! As far as my specific interests, I'm still working on that. I will be writing an Honor's thesis in the Fall and plan on focusing on some aspect of theatricality in Milton, but I don't know what I will be focusing on past that.
My advisor had pointed out a few other programs, namely Villanova, University of Maine, Wake Forest...he seems to think I may be best served to apply to terminal MA programs instead of PhD programs. I'm coming out of Toledo, which I know isn't a school especially known for their humanities grads, so I'm fighting a stigma here; I think that's why he's recommending I play it rather cautiously.