Since you already have a BA, you could look into accelerated BSN programs. This will get you a BSN in the same time or maybe less than your ADN would take. The difference is usually cost. ADN programs are attractive because they are usually less expensive and take less time than a traditional BSN. Depending on your location (not from NY so I can't judge), facilities may be more or less likely to hire based on whether you have BSN vs. ADN.
There are many threads on AN that discuss this. If you do a search, you can find lots of pros, cons and opinions on both routes. Good luck.