GLH, I don't know about the magnet sticking to a 009, but they do stick to an 008
Cadillac made a good suggestion.. buy a cryo pack with two butts in it. Smoke the first to break in the smoker (AFTER you do the initial break-in with about 4+ ounces of the wood of your choice- not fir or pine). After you smoke the first.. eat as much as you like.. you'll love it and freeze the rest. Then for the party, you can smoke the second and mix in the first butt for added meat.
The first will be good and the second better.. but when you add your favorite or home made BBQ sauce.. no one will be wiser. Do get that thermometer tho to help you keep track of the temps so you don't have to open the box unnecessarily.. that just addes lots of time to the overall cook time. As mentioned in other recent posts.. Unless you want a remote thermometer.. get a relatively inexpensive Taylor digital thermometer with a 4' cable for about $15 or less at Target.. it'll serve you well for a long time.