1 pre cooked pound of pulled pork is a good starting point.
Brisket, I'd guess about 3/4 lb of pre cooked meat/person.
I usually figure 1/4 lb cooked PP per person at 40% loss.
Brisket depends on how you trim. I'd say you'll be at a similar loss?
18.5", 22.5" OTS
Large BGE (chambersuac's)
The Fiery Furnace (chambersuac's)
Big JT's Smokin' BBQ Competition Team