Local lan turnament for fun and prizes

Hey im a local league of legends of the new york area in a small city of buffalo was interested in host a league tournament, to see how me and my tram fair among other players. I have a 5 man team but no other team in are mmr or ranking which rangers bronze 2 to gold 5. I have a venu that i can see if they would allow me to host a series matchs there for a low price or have the event take place during a all night lan party where they give way prizes. I would really love to just have a fun 5v5 match that will put both team on the edge of there seats.