As a suggestion to drum up interest, try to bring in some of the more local big names to guest, such as Greg and Chris Ayers, they only live a few hours away and are very well known. The cost of inviting local guests is low, and brings more local intrest. For every big name you get to post your link on their sites, the more people will check out to see what this con is all about. Also, try to boost your artist alley and dealer's room, for the same reasons. When an artist decides to take a table at the con, the first thing they will do is post for their own friends/fans "I will be at this place, come visit!" So it is a great marketing strategy. Since this con is in Killeen, I might suggest advertising to the soldiers of Ft Hood as well. Trust me, there are more fans than you would think there, I was stationed there for 2 years!