Well, like they say, it's not over till the fat lady sings, like they say. A lot really depends on your FO as to how quickly they're able to schedule your interview, you not being stuck in AP as a result of pending background check, your ability to put pressure on your without jeopardizing things and the U.S. Embassy in your home country of course.
Here's a similar story from 2013 (someone with a high CN current in Aug who went through AOS - was interviewed in Sept - and FTJ for the spouse). They made it through, so maybe the story may inspire and give you hope:
http://forums.immigration.com/threads/dv-2013-aos-only.308496/page-203#post-2245053