Buy a home with co-signer?

I just purchased a home with condition to finance. My in-laws whom have excellent credit are co-signing for me. My question is I had a bankruptcy in 2006 it was fine and I was properly discharged. I have leased a car and thought that it would help my credit since but it was a in house lease and was never reported to Equafax. So since I have bad credit but my in-laws have amazing credit should I be able to get a prime interest rate for my mortgage?