The problem here is that those are filters, and the newcomer will usually still be faced with several options, which will still make them scratch their head.
A wizard is a good idea, with simple questions, rather than filter buttons.
But it needs to end up telling you "here you go, this is the one you want!", giving you just a single instance. Doesn't matter that multiple will probably match the answers given - then just pick one at random. Chances are, they will be equally happy on either, and if not, well, it isn't very hard to switch to a new instance later on, when they have become regular Lemmists.

Awesome, thanks jerry!
Welcome to the party @Natanael@infosec.pub - glad you want to take care of !crypto@infosec.pub! I hope you'll be able to convince a decent chunk of your community to come with. :)
Perhaps look into finding a decent cross-post tool, and start cross-posting any posts made on /r/crypto to /c/crypto. Well, I suppose you should give OP a short amount of time to also post here, in case they already have an account, but otherwise, you should do it. No one will migrate, or start being active here, if there isn't already some activity.