I want to teach full-time at a CC but I also want a PhD in Lit, not rhet/ comp. How foolish to want what I want and still think it can work. I think you can be a skilled writing instructor and still have an interest and specialty in Lit. And there is a place for literature in the CC setting.
In talking to English colleagues at the CC where I used to work, the biggest problem is that the ones with a Lit degree (PhD or MA doesn't matter in this context) don't WANT (by and large) to teach composition, which is about 70% of the English schedule at my last CC (about 30% developmental writing, 40% college-level writing, and 30% literature). These numbers were typically at the CCs in the state system at the time. These instructors were also the ones who didn't want to take advice on teaching writing from the one or two rhetoricians on faculty. Unfortunately, there are so few who pursue Rhetoric compared to Literature that CCs are forced to hire Literature people to teach writing classes.
I'm glad to hear what CCs don't want in their cover letters though I wonder what they do want. I'm not at the cover letter writing stage yet, but it makes me wonder how I could talk about my CC experience in and engaging and informative way. So much of what I do is finding ways to stress the importance and interest of very basic rules of language (parts of speech, sentence structure...) Also, my experience as an adjunct has been teaching the texts I'm assigned with some supplemental handouts and assignments that I bring to the table.
They want to read that you have taught composition classes, liked it, were good at it, and are interested in getting even better at it. They definitely don't want to hear that your teaching interests only lie in the direction of Literature. Of course, when you get to the interview stage, they don't want to hear how you "would be willing to teach a section or two of comp alongside" your "three literature sections every semester." (Yes, someone actually said this in an interview at that CC.)