I'm also in a similar situation. I graduated in 2000 with a BA in Sociology and Women's Studies
I've decided to go the accelerated BSN route as well. There are a couple of schools in the city (Downstate, NYU, Columbia, Wagner, Pace) that have accelerated programs. Most are between 12 and 15 months long (compared to 2yrs for ADN, full-time). The catch with the accelerated programs is that you really can't work. Some people do it but I've heard that it's really difficult b/c the programs are so intense. Also, any school that is inexpensive (CUNY and SUNY) is super competitive. I'm applying to 7 different schools to keep my options open.
Echinacea's right, RNs with a BSN only start out making $1-$2K more annually than RNs with an ADN but there has been a lot of discussion about BSN being baseline in NY. Also, from what I understand, a BSN can provide you with more advancement opportunities.
Since you already have a BA, I would recommend you apply to BSN (accelerated and regular) as well as ADN programs - if you get into a BSN program you could be done in the same amount of time as it would take you to get an ADN and it might provide you with different opportunities.
I'm putting in all of my applications right now (and have done extensive research on the different programs), so feel free to ask me questions about any of the different programs/schools.