By the way, I don’t think it is that long in the absolute!
I’m just thinking of the typical use case, which, probably, would be someone who has not been around for so long (or simply never really joined a club) and want to start something independently of one of the main groups. They may be nervous about starting anything and the info dump might overwhelm them.
The intro of the thread is nice in making it clear that it’s just to help, but people might get scared off before reading it. As long as there’s a short bolded (so that they really see it) disclaimer at the top saying “people don’t need to follow those suggestions, but they’ve been widely used and they help” or something like that, I think it’s fine as is otherwise.