Way out of my neighborhood, but since I hate to see your post sit here day after day with no replies I'll throw my thoughts in anyway. Here's a list of folks that repair double basses off of Bob Gollihur's website. These are the kind of people you want to talk to about renting/buying a bass, not the Guitar Center/ Sam Ash kind of of music stores that are not knowledgeable about DB and unable to fix problems.
http://www.gollihurmusic.com/luthiers.cfm
I've heard good things about Nick Lloyd and Cincinatti Bass Cellar in your part of the country.
If you haven't read the newbie links sticky in the Basses [DB]forum yet there's a lot of info there. I also recommend finding someone to take a few lessons as EB and guitar theory will transfer but the physical technique with DB is different and it's easy to hurt yourself. You'll save yourself a lot of time and trouble by getting someone to show you the basics.