www.songwriter101.com has a collaborator thread you may want to check out and post your call out on. Lots of amateur lyricists there in the lyrics library. Several links to other sites to post songs can be found in people's lyrics posts and replies. Some good exchange of info, but you have to stumble on it by the questions people ask.
But the collaborator thread may help you find collaborators in Columbia area. Hey, while you're there, songwriter101, flip back a few pages thru the lyrics library and find my songs, Reason For All Things, and We Could Use A Little Rain. I posted the lyrics there with some cues to the chording. I also posted on PBS.org, where someone wondered if there were any antiwar songs, my song Cast Away Stones. Good luck, from Ohio.