From what I've learned from my communications with various program directors as well as current CRNA students, you are correct in that they do not seem to be too concerned with where you get your prereqs. The only 2 restrictions I have heard is they want a "brick and mortor school" - a school with a physical campus, not an online only University and they'd really prefer courses to be taken from an university not a junior college. As most "physical" universities now offer online courses (and they don't state "online" on your transcript), I'd go where I felt comfortable (maybe where you got your BSN), could get instate tuition, etc. Good luck to you.