I have not smoked any butts low and slow in a long time-about a year now. I have 2 8 pound butts to cook for a party on saturday and need them delivered and unpulled by 4pm. Does trimming the fat cap off help speed up the cook compared to not trimming? I have never trimmed any butt and always came out better than i expected. Does 1 1/2 hours per pound cooked at 235-250 degrees sound right which would make it 12 hours cooking time? I would like to give myself about 2 hours of down time when i am done. Would putting them on at 11pm friday be good enough or should i put them on earlier?