I just got an invite, via email from the PI, to attend an interview weekend for a doctoral program. This is good news, but I am concerned because this is the first school I've heard from about interviews, and also happens to be the school I would be least likely to attend if offered admission (out of ten applications). I am anticipating possible interview date conflicts, but it seems like I might not hear from the rest of the programs until much later this month, or January. How should I handle this? Thought I wouldn't have to deal with this dilemma this early, without having a better idea of other invitations ... but I do need to respond to the PI's email. Would totally suck to agree to attend the interview, and then have to email her in a month and say I can't make it anymore.