Yes, you are right! But, these days Hospitals prefer an RN with BSc(I don't have a source here, but I was told by the adviser of one of the reputed universities). There is also an opportunity to get promotion at your workplace.
You can go with ADN program, become an RN and work at the the hospitals or somewhere and at the same time go to university to complete BSc. Universities have special program for such nurses. It may take an year or 2, which depends on you!