I've been wanting to start a local, permanent, lanparty place here.

That's the only kind of startup that I'll actively avoid. I personally know someone who tried it and it didn't work out for him.

Now if you've got a business model where a lan-party "section" is part of a larger business, such as a nightclub, a computer store, a conventional arcade, or a pizza parlor, then maybe we can talk. But as far as I know, no one makes money on just LAN parties.