So I just spent about 20 minutes on the phone with A.T. at Outskirts Press, and it was a really good conversation. Outskirts Press also offers a combination of publishing and marketing services. At this stage of the game, I'm confident I can find someone to do the grunt-work of publishing a text, so I'm really interviewing these companies for their Marketing- and Publishing-Industry- expertise and advice. Specifically, something where I can pay for what I need but not have to sign an exclusive contract.
A.T. was in the "total package" department, but was happy to set up a contact with their marketing side for a separate deal. I hope to hear from them soon. Nice first-contact Outskirts Press!