I got pre-qualified for a mortgage at a note rate of 5.75 and an APR of 6%. Good deal?

This is my first home, and I'm only putting 3% down. My credit score is around 700 (give or take a few points). Should I shop around for a better APR? Or is this a good a deal?
Update: It's a 30 year mortgage. Paying the mortgage is not a major concern because I plan on paying less for what I pay for rent. I just finished my doctorate, so the career is there and the money is coming in. I just haven't saved enough for a 10% down payment.
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