If you want this to be big you might want to include lots of info in your thread and have people post their steam urls instead of having hundreds of people add you

Try to do what Biga did for his tournament.

Even on the page the details are confusing.
What weapons is a good question for starters.

Fuck. I read the title as Unreal Tournament.

Entry fee seems a little silly. With only 1 rec per team you'd need to get like 18 teams to get the prize pool up to 1 key. Might just be better off making this a fun tournament.