Good luck on whatever you choose! I'm an Excelsior ADN grad in Georgia and I, just yesterday, got an RN job in North Carolina. I found the the preceptorship might be more difficult to accomplish than just getting a year of experience out of state. I've phoned or emailed ALL of the Atlanta area hospitals and NONE of them do any sort of program for non-traditional students. Excelsior explained to me that graduates are no longer under the school's insurance. I'm certain at this point in my search, that there is NO preceptorship. Maybe the GBON will put something together for grads in the future.
If you want to continue with Excelsior and you HAVE to live in Georgia you can always commute to another state or get a job with the VA for a year, then endorse into Georgia.
Good luck! If I had to do the ADN program over again, I would NOT go through Excelsior. It's an awesome program, but not for Georgia residents.