Wow that looks good!
On a similar note:
We used to do Port-a-pit Chicken fundraiser's for my local 4-H clubs. It usually involved a little bit of ticket pre-sales work, and then manning the port-a-pit 1 day in a local parking lot. These were generally good for about $1,000 each event. These were the guys we used, and they serve Northern Indiana and south-western Michigan (also known as Michiana).
http://nelsonsbbq.com/index.php
For those headed to the IRI along 31, you may have accidentally come across these guys...