I'm going to be doing a large cook for a big get together, what I have is 2 wsm's 18.5 & 22.5, I'm doing 2 briskets for sure and was going to do some pork butts. My plan was to do the briskets in the 22, but now I'm thinking if I did them in the 18 I might be able to do 4 butts in the 22? I'm thinking 2 briskets will fit the 18 fine enough or only 2 butts in the 18. Or would a 22 fit even more butts?