I haven't looked in a long time, but Mark Arbour's CAP series may beat both CJs.
One huge obstasscle to future stories is timing. CJ's story would not have been the same had I set it in a different time period or started it with him being older. Gay marriage and the 2016 presidential election were integral to the character's development. Now I'm stuck writing in the future, and it's a pain. Not only do I have to skip most real life events, but I can't have everyone who's gonna have kids do it when they're as young as CJ. One or two young parents I can get away with, more that that would be unrealistic. As I mentioned before, I do have references to Chipper already outlined, we'll see when those come to light.