I have a 626 credit score with a $7,500 bill in collections related to a Medical - Emergency Hospitalization. My wife's credit is around the 700. However I am the primary income in the household (Mine is 50k/year, my wife's 30K/year). We are planning to purchase a Home in Miami, FL in 2010. What rate do you think we can get based on all these facts? what should I do to optimize my interest rate in a 1-year time frame?