I was in a similar position to yours, as far as needing to wait a couple of months. I took the interview but had to defer a couple of class dates, but I was the first one in once I could take a class date. The "seniority is everything" has validity, but you gotta do what you gotta do. It comes down to what you want to do, they aren't going to tell you "no," and hiring will for sure be going on somewhere. Good luck