Childcare in Nashville or Jackson area

Hey everyone. I'm currently a senior nursing student in Martin and will graduate with my bachelor's in May 2010. I am from Martin originally, but would like to work at a larger hospital because I want to attend anesthesia school in the future. In Medina (near Jackson) and Cane Ridge (near Nashville) there is a lot of new construction and the houses are around 140k. Ideally we would like to buy a house wherever we move to as we currently own a home in Martin and don't want to go back to renting.

So my question is, what do you do for daycare if you live in these areas? I haven't called the areas in Jackson, but I think there is only 1 day care in Medina and I will have a 6 month old about the time I graduate. I talked to 3 different daycares in Nashville including those at Vanderbilt and Centennial for employees and the lowest price is $640 month to $800 month for full time. I'm just curious how you are able to afford it. Where I live it costs about $300-$400 a month and I just don't have the budget to double that for day care. Are there more affordable options that I am missing?