cook times

I was in Costco and came across a small, 5 pound pork shoulder with a large fat cap. I'm planning on removing most of the cap. Ballpark on cook time for one this size at 225?

I am smoking a 8.5 lb brisket flat this weekend. I know it is important to to do the probe test to determine if it is done, however, we are eating at 3 pm so I am trying to figure out what time I should put the brisket flat on the smoker. Roughly how long will it take to smoke a 8.5 lb brisket...