I am an RN who is not currently working as a nurse. In terms of a career choice, I think only the individual concerned can weigh up what they feel they want to do, and the lengths to which they are prepared to go to to pursue that choice.
I have both an ADN and a BSN. There is a great difference of opinion in the nursing profession as to the plusses and minuses of each. I would recommend doing more reading on this site, as I think there has been a lot of discussion of this question. Personally, I am glad I went through an ADN program first, as this gave me very good clinical nursing training doing hands on care of patients in hospitals and other facilities. I bridged into a BSN program because I perceived that the trend in nursing was towards a nurse having a BSN, particularly as far as graduate career prospects, and I wanted to keep all my options open. I understand that some hospitals are now stating a preference for BSN graduates.
There has been much discussion on these boards as to current opportunities in beginning a career in nursing. There is currently a discussion on the General nursing discussion board in regard to the "Nursing Shortage" that may perhaps be of interest to you. If you haven't already done so, I would suggest searching this site in regard to your questions as well as posting here, as I think there has been some threads along these lines that may be helpful. This site is a great resource.
It is interesting to me that you are thinking of changing from accounting to nursing. I am very happy for many reasons that I chose nursing, the main ones being that I can make a decent living and have the knowledge and skills to help my family members. I do however note that the people I know who are accountants, and I am thinking Chartered Accountants or CPA's, appear to enjoy their careers, and I sometimes envy their nice comfortable offices.
I hope this is helpful, and I do wish you the best of luck with whatever decision you make.