I do have another question for you, though--are you committed to staying with this adjunct gig indefinitely?
I ask because we get people here all the time who have committed to an adjunct job but then get hired for something much better elsewhere. They often suffer from tremendous guilt at backing out, despite assurances that the department will have no difficulty in replacing them, and the fact that full-time jobs clearly trump adjuncting so people will definitely understand. But what if the course(s) you're contracted to adjunct for are of your own design, and you're the only one qualified to team it/them?
So, are you on the market? If so, I'm not so sure you want to tie yourself down like this.
I am on the market, but the topic of the course is so rich that, even if my department decided to change its status from "special topics" to a general offering, the course description would remain the same, but anyone would be free to select appropriate readings, and write tests and semester essay questions. So I'm proposing to teach the topic, but not designing a course, and so, if I left, wouldn't be leaving my department without someone to teach a prime offering.
