Ultimately, St John’s generates a lot of lawyers and humanities grad students, but not a whole lot else without extra pre-grad school to school to get some of the STEM prereqs out of the way. I love that the school generates humanities scholars, but it’s not my bag, so I moved on.
If I had the money, I’d love to go back and finish when I retire, but at 40 I’m already not as smart as I was in college, so I’m pretty sure I’ll be too dumb to be a useful classmate when I retire!
If you haven’t gotten to Euclid yet, do yourself a favor and get the Heath translations with his notes. A few of them are really, really hard for people trained in late second-millennia mathematics to be able to get through without some hints.