Happy I could help!
My specific experience is not in the tri-state area, so I can't really speak to the differences between the two schools. When I've heard offhand remarks about them, the two seem to be considered comparable from my company's perspective.
You should take a few hours and really look through each school's website. Check specifically for Big 4 involvement in the following:
-endowed chairs
-endowed scholarships
-sponsored events
-Beta Alpha Psi or other student organization 'partner programs'
-any 'on the job days' or special programs with alumni from that school
-check the school's board of trustees- how many Big 4 partners are on each?
If there's an obvious school that stands out with many more sponsored events, or has much more campus involvement from the Big 4, choose that one!
Regarding your age, you're right that it might be an area of concern. The best thing to do is just get involved in recruiting from the moment you set foot on campus, i.e. join BAP or another club that will get you access to the recruiters ASAP. When a professor makes an announcement that one of the firms will be on campus holding a dorky bowling event (or similar) show up, chat with the staff & seniors who come along, and make sure the companies know you. Be confident in explaining why a Big 4 is the best step for you, and make sure you don't come across as arrogant- on our side our biggest worry is the attitude of some older recruits when they show up for work the first day to find their workload is managed by a 24 year old. And on the plus side, if you get hired, you'll likely come in as a Staff 2 designee, meaning you'd be eligible for promotion to Senior after your first year with the firm.
Regarding your industry preference, that really depends. Many offices hire specifically for Financial Services, so that one is easy to state a preference, but if you can't find postings specific to FS you'll probably spend your first year in a variety of industries. You really don't get to choose too much, although some offices will take your preference into consideration, but 90% of it will depend on your schedule and your engagement start/end dates. It definitely wouldn't hurt you to express a preference during the interview process to show that you've thought through what your career will look like! Just make sure you don't come off as unflexible

Let me know if you have any further questions!