With the exception of NYU Stern, Wharton and Ross, none of the top tier feeder schools have finance or accounting as majors. Goldman is going to hire the “best available athletes” from the Harvard’s and Amherst’s of the world and would not care that they have no background in finance or accounting. They are just looking for rigor in quantitative classes. When I was part of hiring for a bulge bracket, I was probably more inclined to hire the engineer or physics major from MIT than the finance major from Wharton. We’re going to teach you the finance stuff that is relevant to your job. We can’t teach your ability to analyze numbers.
A big list to narrow down now is fine, but you should work to narrow down your list between now and next year. I would have no more than 6-8 reaches (that includes many of your targets which are reaches), a couple of safeties and a couple of true targets. For the reaches, your essays will matter, and AO’s spot cookie cutters pretty easily. Don’t fall into the trap of thinking selective school admissions is like the lottery. Yes, applying to several is wise, but not at the cost of diluting the customization of your essays.