Are you married to electric? A WSM and a PartyQ will give you 95% automatic temperature control, and will cost you about $500. Or if you want to go more electric/automatic, consider a pellet fired smoker like a Traeger or Yoder. I think you'll end up with a better final product but still get the ease-of-use you're looking for. Plus a lot more folks use WSMs and pellet cookers than electrics.
What does the cow pig say? MOINK! MOINK! MOINK!