Hint and I do this a lot. Get yourself one of those electric turkey roaster things that have controllable temp. They are one sale right now! Mine is 18quart and that does all I need for the larger parties! Double or even triple your recipe.... As an example I can fit almost 4 #10 cans of premade chili in mine before I dr it up and still have headroom. Good luck...
Proud member of Brethren Weber's for life
(Rescued 7 kettles in 2007, 1 in 2008, 2 in 2009 and 1 in 2010 Three of which I have and 8 that have gone to Brethren. PM me to get on the waiting list)
Weber Kettle Dabomb
Weber Kettle Justintime
Weber Kettle (Yet to be named by Daughter) Evil Twin Suggested!
Weber Kettle Grace
One Smokey Joe
UDS "Peggy Sue"