Depends on a handful of factors, one of which is your preference. You certainly might have the capacity to purchase with a score of 635, but will you be working right away? You will need to prove that you have the ability to repay a mortgage loan and stability of employment/income is a big kicker.
You might want to start doing your research online; thanks to the internet, you can conduct a lot of searching right from your own home.
I'd recommend reaching out to the likes of Mr. Frazier who would be familiar with the area so that you can maximize your search results. Utilize his knowledge to find the appropriate neighborhood, schools, shopping, etc.
Then, of course, give me a ring and we'll evaluate your situation to find the right home mortgage loan for you and your family. There are some awesome rates and terms available today.