when I did that sort of thing as a post grad our departments offered Ba as well as BSc options - social sciences - as well as clinical
your local should have adult entrant courses - it's not like school - it becomes a social thing as well ... not like the babies who attend - most will be real people with personalities and everything
you'll find you miss it when not there - and it gives you a real edge when it comes to other study - which will be ongoing if you go medical
I think most give an under grad certificate after the first year - most employers see it as a statement of commitment - and could well accept you as an intern
you might also find that the student nurse thing allows for on the job study
to rephrase tam's gem - if it's worth having it's to be worked for
otherwise settle for the rubber gloves and soft paper (there's nothing wrong with that job either - someone has to)