OK, I have to ask. To me, that seems like a lot of Mesquite. It might just be me, but a little mesquite goes a long way. I have used the Mesquite lump form Costco Business and it was a little too much for my. Now it coul be my cooker, as the Stump's is pretty airtight and your can over smoke quickly.
What type of cooker are you using and how was the smoke flavor?? Subtle, pronounce,??? It sounds like it was enjoyed by all, so it must have been good.
The most I can fit is 10 big or 12 med butts at a time. I still have to rotate, as the bottom is a little hotter than the top. I am lazy, so I just pull the bottom ones early, wrap and into the Cambro until the others finish.