I have an unrelated bachelor's and most of an unrelated master's but for me, it made more sense to get the ADN. The BSN would have still taken more time and cost a lot more. A lot more.
Now my employer says I have 5 years to get that BSN, and I'm probably going to skip it and satisfy that requirement with an MSN.
I'm thinking that it's different depending on where you live and what schools are available. It sounds like there's more affordable BSNs where you live that work with your unrelated degrees better than my local schools do. For me, besides the cost and time considerations, my ADN school was more respected than the BSN school. Better education, better clinicals, better work ethic/attitude of students.
I'd advise everyone to write down a side by side analysis and timeline of their options and figure it out that way. And do go to the schools and talk to the counselors, not all their information is available online. Just like nursing, you need to get in there and do your own assessment. Roll the school over and look at it's sacrum, lol!