I agree it is a good idea and that's what I plan to do in my own situation. However, my point is that with the unsubsidized federal loans, while the interest accrues, it doesn't compound while you are a student. In other words, "interest does not build on your interest" as you stated earlier. That only occurs once you enter repayment, which is after medical school, at which point the interest you have left over will get tacked onto your principal and THEN interest will begin to build on your old interest. Sorry if that just made things more confusing,but there are lots of little intricacies to this game