When you find one, definately have a whole house inspection done, and get it done quick after you make your offer. That way, if anything needs to be repaired, you can request the sellers to have it repaired before closing on it.
Try to buy the most house you can. It may strap you for money right now, but in the years ahead, you will be making more money, and the payments will be easier to make. And seeing that this is your first house, remember that you will probably be moving in 5 - 8 years.
Good luck!!
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1985 Mustang GT