2 smaller shoulders cook faster than one big one. Not sure if your smoker will do 50# or 60# in one batch. Multiple batches, time may be more of a factor. Also I take some after its pulled. Drain it, put it in a pan with BBQ sauce. Then put it back on for 30 to 60 minutes. But some people will prefer un-sauced. You could do a mix. Some folks are just as happy with a burger or a brat. That’s a lot less work.
I saw there is a chicken wing shortage. Wings are 3x the price of other cuts. Like to see the look on my Grandparents face. To see the price of wings and ribs. Compared to other cuts.