I've been doing 30 pound lambs for years on a rotiesorie i built,now i want a smoker,want to be able to do several butts or chickens at a time.i really like some of the 250lb propane tank builds on this site,i can get a 250lb tank for 125.00.really would like to build something i could take the racks out of and rotisorie a small pig or lamb any thoughts out there, thanks flatrock