If it is bone-in, figure 1 pound per person, boneless, figure 3/4 per person, so around 7 pounds is good, Serve lots of potatoes to the big eaters.
I have had Prime Rib cooked in a showtime rotisserie, it was not bad.
"perhaps...but then again...maybe not..."
careful there son, those ribs are boiling hot...
(='.'=) Here there be bunnies...
Pacific Rim BBQ
Bob's Brew and Que