I am myself here in graduate research assistantship and i didn't show any financial documents, property valuation, and what nots. To answer your queries, i would say it depends on the amount of total grant that you receive from the college as TA to cover your total expense . i believe sometimes TA doesn't necessarily cover all the expenses and in that case you might wanna be in safe side by furnishing bank balance of couples of lakhs that offsets the deficit. i had surplus of about five thousands dollars and i didn't show any income source, bank balance, and property valuation. i think that might help you a little.