The income limit should not be a problem during residency unless your spouse works too (if no spouse, no problem). However, after residency you will likely not be able to take any deduction for the interest unless the tax laws change in this area.
I did my 2004 taxes through TurboTax online and it figured out all my deductions for me, including student loan interest, based on my income level. It was really helpful, and I got a big tax return.