I am an ASN with 10 years of experience and have not found that to be a problem getting a bedside job. You are correct that BSN is in prep for management and you need some experince for that. The only thing about getting your BSN later is it is harder to get back in that school mode. I am currently in an e-program and frequently have trouble getting into that "school mode" but graduation is soon approaching and then off to a masters. It is also harder to apply yourself when you have a full-time job obligation as well. Most on-line BSN programs run condensed-excelerated classes (modular) which makes it very intense.
Good Luck in whatever you decide.