I haven't worked on plushies for years by now. I actually did the prototype for the ones offered by 4DE, so you could probably get a plush from them. I haven't paid attention to the pony scene in a while, but i believe they were the only ones who offered AJ with her hat back then, and probably still are.
I think I'd go insane if I tried building that in a bottle... haha. And yeah the research was quite rewarding. I used to think that these ships were just messes of unnecessary lines. Well I still do, but I can at least account for 2/3 of them after all that