Searching for a server for one day

Hey there folks, I'm the admin of pewdiepie.net and organizer of a community event, which will happen on monday, 7pm GMT+1. We wanted to play Killing Floor, but unfortunately we're unable to get a Killing Floor server for about 30 players (I saw that these exist). Could any of you redditors help us out and lend us a server for this time? You'd definitely be invited to the community event if you want to.