Hey Greg,
According to the smokin guide, Pork Butt (Pulled) 225°F 1-2 hrs./pound
195° 5-6 oz. Cherry, Hickory, Apple, Oak, Maple. I have the guide now on my computer. It is really a handy guide. Look on the main page under guide to smoking time, temp, & woods. I too am very new at this, but keep reading the forum. And the people here are awesome about helping and giving good advise. I would follow Steve's advise and smoke at 235.