As an Arizona Hetalia cosplayer, I'd recommend advertising this here (http://hetalia-az.deviantart.com/). Arizona cosplayers are pretty close and if you mention it to any of the Co-Founders I'm sure they'd be willing to mention something about it.

We actually had a meet up earlier this year, but it took about three months of planning (because we all live in different parts of AZ), so IDK how the turn out is gonna be.