It's in the school specific discussions thread. I made my own spreadsheet that has all the details so you can fiddle with everything (including residency salaries and your payments during residency, etc.) too if you want it PM me. I haven't posted it on SDN b/c it can be kinda messy if you don't spend some time figuring out how exactly I do it.
For subsidized Stafford loans, you're all set. $8500 a year, no interest until you graduate. For unsubsidized Stafford loans, interest is accrued yearly but is not capitalized, i.e. compounded into the principal. You're gaining interest but it's not counting towards the next calculation of interest, if that makes sense. Not sure about GradPlus but I think the interest is also not capitalized until repayment starts.
I'll need to take a look at that spreadsheet but right now I can't see how you'll be $300k+ in debt when I'm taking out loans for more per year and will be less than $200k in debt by the time I graduate. The COA includes living expenses in NYC too, right?