Why not wait a couple of months until you pass the NCLEX-RN before enrolling in an RN-BSN program? That way, you will have all options open to you. A few months will fly by. For what it is worth, I did the WGU RN-BSN and found it to be a very good program. I had a previous bachelor's and master's from other institutions.
Also, for what it's worth, I would avoid Chamberlain and other for-profit institutions. They are generally overly pricey and many are not looked upon favorably by other institutions, should you decide to continue your education.