its been just over a year now since my last brisket cook and i forgot a couple of things and my question is as follows - 13lb packer went on at 645am - smoker temp has been at 250 degrees all day with the meat temp sitting at 163 degrees for the hour now. should i wrap in foil now or wait untill it hits the 180 mark? should i see the meat temps rise soon? should i wrap now in finish in the oven?