I went to the local wholesale store today to get a brisket for my weekend cookout (earlier post). I got the larget one they had and it was a half flat weighing in at 4lbs. I wanted to do an overnight cook, but when I reviewed Chris' directions, He had 2 larger briskets for his over night. Do you all think that 8-10 hours on an over night would be too much for a 4lb brisket?