A couple of recruiting questions

1. I would not do a "vastly different" resume for these 3 different types of firms. It may be worthwhile to make versions that are slightly different, but the jobs are not so dramatically different that you'd need to go all-out to write completely different versions.

I would probably start with a "base" version that focuses on your internships, and then for consulting change it a bit to spin what you did and make it look more operationally-focused. For VC it doesn't need to be much different - maybe highlight your CS background a bit more, but VC and consulting resumes are not that different at the entry level (also, be aware that VC is very, very difficult to break into coming straight out of college).

The quant trading one should focus less on your corp fin experience (smaller entries) and more on your educational and research background in CS, as well as any trading you've done on your own dime.

1. Definitely not, 2-page resumes should be avoided for anything entry-level in finance (unless you're in a region like Australia where multi-page resumes are the standard).

I would instead cut back on the corp fin/PE experience a bit and focus more on the education/research, but do it all within one page.

1. Yes, it will still be helpful though obviously the more programming experience the better. I would still highlight it on your resume, but if and when it comes up in interviews make sure they know that you took a more theoretical approach to the major so you're not the best coder in the world.

Even if what you did was mostly theory, that kind of quantitative background sets you apart from all the econ/finance people applying - being a CS major certainly helped me with getting hedge fund and prop trading interviews.