To put it eloquently, "ditto", lol. Seriously, one of the pluses (and minuses) of our field is that many Ph.D. programs require or at least strongly recommend an M.A./M.Div., etc. I personally don't know of any current Ph.D. candidates without a masters (I'm at Duke), and could only imagine that those who are the exception were brilliant religion majors who had already studied languages, etc.
Just using my personal life and seminary experience as an example, I am a psych / poli sci major with almost zero background in religious studies, am about to finish up my M.Div. and have applied to NT programs. Similarly, many--if not most--of my peers didn't have a religious studies background. While, I'm assuming the breakdown might be somewhat different for M.A.s, it still is more than possible to go the long route (i.e. Masters then Ph.D).
YES, it will take a while, but that is the sacrifice that almost all religious studies Ph.Ds have to make unfortunately.
Good luck
ETA: I would try to be VERY sure, however, that getting a religious studies Ph.D. is your only path. Since your interests seem so interdisciplinary, I would try to take the time to sit down with advisers and professors in prospective fields, and see if there's any other type of program you might be able to apply to more easily, etc.