The challenge is not the score, but the income. For self-employed, there is a minimum of 2 years of tax returns required to average the income.
You can try to clean up your debt, since this would be a wise move in the long-run for you anyway. But to answer your question, you cannot include your income but exclude your credit.
The only other option would be for your husband to find a co-signor who is an immediate family member of his or yours. They would need to have high income and low debt. They would, however, be liable on the mortgage debt and need to be aware of that.
You may contact me on here to discuss further, or you can call me at 440-320-5959.