I don't know how other BONs operate, but I was asked to do a IPN eval by the FBON. Then, IPN (Florida's Intervention Project for Nurses) contacted me with three choices of places I could go. I went and they suggested treatments based on where I was individually. I've seen some first timers be allowed to do outpatient, I've seen some first timers do inpatient. I have rarely seen them factor in an individuals ability to pay. In their eyes you can not go and never be able to work again (which still makes the public safer, in their eyes), or you can go (which protects the public). This may sound harsh, but they don't care. As long as you are out of circulation, whether you surrender your license due to lack of finances or go to treatment.
Some factors on what will be suggested for you can include: 1. what you did (did you ask for help first, get reported, get arrested, divert, are you dependent vs-addicted and so on...) 2. how much you are using 3. are you a chronic relapser 4. do you have other mental health issues.
It will be just as individualized if you go inpatient. I've seen nurses be out in six weeks, two months, five months, etc
I wish there was a way to predict, but there just isn't. I wish you well, though.