Man, I would advise just not doing it. Why not do it at night after work? I've read too many "smoker dropped temp, is it safe to eat" threads to do such thing..
How many times have you realized your smoker is cooking to hot or too cold? Did I remember to open up the exhaust before I left ect... I couldnt do it and I got a double insulated outdoor microwave lol(As I like to affectionately call my BWS).
Backwoods Fatboy-profile for cart build link,Weber OTG,Weber Smokey Joe, Maverick 732,Tan Thermapen